Owner's Manual for HVAC NAVIGATOR models including: DWCPX2, Wired Zone Controller
Wired Zone Controller. Owner's Manual. Commercial Air Conditioning Units . User Notice Please read this Owner's manual carefully before operation and retain it for future reference.
Wired Zone Controller DWCPX2 Model Owner's Manual Commercial Air Conditioning Units User Notice Please read this Owner's manual carefully before operation and retain it for future reference. Wire Zone Controller (DWCPX2) Important Notice Johnson Controls, Inc. pursues a policy of continuing improvement in design and performance in its products. As such, Johnson Controls, Inc. reserves the right to make changes at any time without prior notice. Johnson Controls, Inc. cannot anticipate every possible circumstance that might involve a potential hazard. The installer and system specialist should safeguard against leakage in accordance with local pipe fitter and electrical codes. The following standards may be applicable, if local regulations are not available. International Organization for Standardization: (ISO 5149 or European Standard, EN 378). No part of this manual may be reproduced in any way without the expressed written consent of Johnson Controls, Inc. This air conditioning accessory will be operated and serviced in the United States of America and comes with all required Safety, Danger, and Caution warnings. If you have questions, please contact your distributor or dealer. Product Inspection upon Arrival 1. Upon receiving this product, inspect it for any damage incurred in transit. Claims for damage, either apparent or concealed, should be filed immediately with the shipping company. 2. Check the model number, electrical characteristics (power supply, voltage, and frequency rating), and any accessories to determine if they agree with the purchase order. 3. The standard utilization for this unit is explained in these instructions. Use of this equipment for purposes other than what it designed for is not recommended. 4. Please contact your local agent or contractor as any issues involving installation, performance, ormaintenance arise. Liability does not cover defects originating from unauthorized modifications performed by a customer without the written consent of Johnson Controls, Inc. Performing any mechanical alterations on this product without the consent of the manufacturer will render your warranty null and void. ATTENTION Please read this manual carefully before using and installing this product Never install the wired zone controller in a wet environment or expose it directly to sunlight. Do not knock, throw, or frequently disassemble the wired zone controller and the wireless zone controller. Never operate the wired zone controller with wet hands. The wired controller is a general model, applicable to several kinds of units. Some functions of the wired controller are not available for certain kinds of units. For more details please refer to the owner's manual of unit. The setting of such unavailable function will not affect unit's operation. The wired controller is universal. The remote receiver is either in the indoor unit or in the wired controller. Please refer to the specific models. As for some indoor units connected with the wired controller, if using the zone controller whose set temperature is adjustable under auto mode, the wired controller receives the mode signal of the zone controller rather than its set temperature under the auto mode. Wire Zone Controller (DWCPX2) Table of Contents Safety Summary....................................................................................................... i 1 Controller Interface.......................................................................................... 1 1.1 Appearance and LCD Icons .......................................................................1 1.2 Introduction to LCD Icons .......................................................................... 1 2 Buttons ........................................................................................................... 2 2.1 Layout of Buttons ...................................................................................... 2 2.2 Functions of Buttons ................................................................................. 3 3 Operation Instructions .................................................................................... 3 3.1 ON/OFF.....................................................................................................3 3.2 Mode Setting ............................................................................................. 4 3.3 Temperature Setting ................................................................................. 4 3.4 Fan Speed Setting ..................................................................................... 5 3.5 Timer Setting............................................................................................. 5 3.6 Swing Setting ............................................................................................ 7 3.7 Sleep Setting............................................................................................. 8 3.8 Turbo Setting............................................................................................. 9 3.9 This section left intentionally blank........................................................... 10 3.10 Blow Setting ............................................................................................ 11 3.11 Other Functions ...................................................................................... 12 4 Installation and Removal .............................................................................. 13 4.1 Connection of Signal Wire of the Wired Zone Controller ........................ 13 4.2 Installation of Wired Zone Controller ...................................................... 13 4.3 Removal of Wired Zone Controller ......................................................... 16 5 Errors Display............................................................................................... 16 Wire Zone Controller (DWCPX2) SAFETY MESSAGES Indicates a hazardous situation that, if not avoided, could result in death or serious injury. Indicates a hazardous situation that, if not avoided, could result in minor or moderate injury. Indicates information considered important, but not hazard-related (e.g., messages relating to property damage). GENERAL PRECAUTIONS To reduce the risk of serious injury or death, read these instructions thoroughly and follow all warnings or cautions included in all manuals that accompanied this product and the indoor and outdoor units. This system, including this controller, should be installed by personnel certified by Johnson Controls, Inc. Personnel must be qualified according to local, state and national building and safety codes and regulations. Incorrect installation could cause leaks, electric shock, fire or explosion. Use appropriate personal protective equipment, such as gloves and protective goggles and electrical protection equipment and tools suited for electrical operation purposes. Do not stand on or put any material on the controller. When installing the controller cabling to the units, do not touch or adjust any safety devices inside the indoor or outdoor units. All safety features, disengagement, and interlocks must be in place and functioning correctly before the equipment is put into operation. If these devices are improperly adjusted or tampered with in any way, a serious accident can occur. Never bypass or jump out any safety device. Use only Johnson Controls recommended or provided as standardized or replacement parts. Johnson Controls shall not assume any liability for injuries or damage caused by not following steps outlined or described in this manual. Unauthorized modifications to Johnson Controls products are prohibited as they... - may create hazards which could result in death, serious injury or equipment damage. - will void product warranties. - may invalidate product regulatory certifications. - may violate OSHA standards. i Wire Zone Controller (DWCPX2) Take the following precautions to reduce the risk of property damage Do not touch the main circuit board or electronic components in the controller or remote devices. Also, make sure that dust and/or steam does not accumulate on the circuit board. Locate the wireless zone controller at a distance of at least 3 ft. (approx. 1m) between the indoor unit and electric lighting. Otherwise, the receiver part of the unit may have difficulty receiving operation commands. If the wired zone controller is installed in a location where electromagnetic radiation is generated, make sure that the wired zone controller is shielded and cables are sleeved inside conduit tubing. If there is a source of electrical interference near the power source, install noise suppression equipment (filter). During the run test, check the unit's operation temperature. If the unit is used in an environment where the temperature exceeds the operation boundary, it may cause severe damage. Check the operational temperature boundary in the manual. If there is no specified temperature, use the unit within the operational temperature boundary of 35°~104°F (0~40°C). Read installation and appropriate user manuals for connection with PC or peripheral devices. If a warning window appears on PC, the product stops, does not work properly or works intermittently, immediately stop using the equipment. INSTALLATION PRECAUTIONS To reduce the risk of serious injury or death, the following installation precautions must be followed: If the remote sensors are not used with this controller then do not install this controller... - in a room where there is no thermostat. - where the unit is exposed to direct sunshine. - where the unit will be in close proximity to a heat source. - where hot/cold air from the outdoors, or a draft from elsewhere (such as air vents, diffusers or grilles) can affect air circulation. - in areas with poor air circulation and ventilation. Perform the run test using the controller to ensure normal operation. Safety guards, shields, barriers, covers, and protective devices must be in place while the compressor/unit is operating. During the run test, keep fingers and clothing away from any moving parts. ii Wire Zone Controller (DWCPX2) After installation work for the system has been completed, explain the "Safety Precautions," use, and maintenance of the unit to the customer according to the information in all manuals that accompanied the system. All manuals and warranty information must be given to the user or left near the Indoor Unit. ELECTRICAL PRECAUTIONS Take the following precautions to reduce the risk of electric shock, fire or explosion resulting in serious injury or death: Only use electrical protection equipment and tools suited for this installation. Insulate the wired zone controller against moisture and temperature extremes. Use specified cables between units and controller. The polarity of the input terminals is important, so be sure to match the polarity when using contacts that have polarity. Highly dangerous electrical voltages may be used in this system. Carefully refer to the wiring diagram and these instructions when wiring. Improper connections and inadequate grounding can cause serious injury or death. Before installing the controller or remote devices, ensure that the indoor and outdoor unit operation has been stopped. Further, be sure to wait at least five minutes before turning off the main power switch to the indoor or outdoor units. Otherwise, water leakage or electrical breakdown may result. Do not open the service cover or access panel to the indoor or outdoor units without turning OFF the main power supply. Before connecting or servicing controller or cables to indoor or outdoor units, open and tag all disconnect switches. Never assume electrical power is disconnected. Check with meter and equipment. Use an exclusive power supply at the controller's rated voltage. Be sure to install circuit breakers (ground fault interrupter, isolating switch, molded case circuit breaker, and so forth) with the specified capacity. Ensure that the wiring terminals are tightened securely to recommended torque specifications. This equipment can be installed with a Ground Fault Circuit Breaker (GFCI), which is a recognized measure for added protection to a properly grounded unit. Install appropriate sized breakers / fuses / overcurrent protection switches, and wiring in accordance with local, state and NEC codes and requirements. The equipment installer is responsible for understanding and abiding by applicable codes and requirements. iii Wired Zone Controller DWCPX2 1 Controller Interface 1.1 Appearance and LCD Icons Wire Zone Controller (DWCPX2) AUTO TURBO SHIELD MEMORY -- SAVE F SET HOUR A BLOW CO2 QUIET U T O EEnntteer/cCaannceclel Fan Mode Function Timer On/Off Fig.1 Outside View of the Wired Zone Controller 1.2 Introduction to LCD Icons 1 23 456 AUTOT URBO SHIELD MEMORY --- SAVE F SET HOUR A --- BLOW CO2 QUIET U T O 7 8 9 101112 13 14 15 16 17 18 19 Fig.2 LCD of the Wired Zone Controller 1 Wire Zone Controller (DWCPX2) Table 1 No. Symbols Description 1 Swing function. 2 Sleep function (Only sleep 1). 3 Running modes of the indoor unit (Cooling, Dry, Fan, and Heating). 4 Defrosting function for the outdoor unit. 5 Keycard control function. 6 Lock function. 7 High, middle, low or auto fan speed of the indoor unit. 8 The button operation, temperature setting, "ON/OFF" operation, "Mode" setting, and "Save" setting are disabled. 9 Turbo function. 10 Memory function (After power failure and power recovery, the indoor unit resumes the operation in the original state). 11 This row left intentionally blank. 12 Blinks under ON state of the unit without operation of any button. 13 Energy-saving function (this function is not yet available for this unit). 14 Ambient/preset temperature value. 15 This row left intentionally blank. 16 17 18 19 SET 2 Buttons 2.1 Layout of Buttons Blow function. Timing value. Quiet function (two types: quiet and auto quiet)(this function is not yet available for this unit). Displays under the debugging mode. 1 2 3 4 EEnntteer/cCaannceclel Fan Mode Function Timer On/Off 5 6 7 8 Fig. 3 Buttons on the Wired Zone Controller 2 Wire Zone Controller (DWCPX2) 2.2 Function of the Buttons Table 2 No. Name Function 1 Enter/Cancel Function selection and cancellation. 2 Running temperature setting of the indoor unit range:61~86°F(16~30°C) 6 Timer setting, range: 0.5-24 hrs. 3 Fan Select high/middle/low/auto fan speed. 4 Mode Select Cooling/Heating/Fan/Dry/Auto mode of the indoor unit. 5 Function Switching between the functions of Turbo/Save/Blow 7 Timer Timer setting. 8 ON/OFF Turn the indoor unit ON/OFF. Press and hold these buttons for five seconds while the unit is OFF to enter/ cancel the Memory function. (If memory is set for the indoor unit after a 4+2 + Mode (Memory) power failure, power recovery will resume as the original setting state. If not, the indoor unit is defaulted to be OFF after power recovery. Memory OFF is the default factory setting.). By pressing them at the same time under off state of the unit, is 3+6 Fan+ displayed on the wired zone controller for the cooling only unit, while is displayed on the wired zone controller for the cooling and heating unit. Upon startup of the unit without malfunction or under OFF state of 2+6 + the unit, press the function buttons at the same time for 5s to enter the lock state. Other buttons won't respond to being pressed. Press buttons again for 5s to exit this state. 4+6 Mode+ Under OFF state, the Celsius and Fahrenheit scales can be switched by Under OFF state, you can go to the commissioning status by pressing "Function" and "Timer" for five seconds. Get "00" to appear on the temperature display area by pressing "Mode", then adjust the options which are shown on the timer area by pressing "" and "". There are a total of four options, as follows: Indoor ambient temperature is sensed by the return air temperature sensor ( 01 is displayed in the timer area). 5+7 Function+Timer Indoor ambient temperature is sensed by the wired controller (02 (Selection of Temperature Sensor) is displayed in the timer area). The return air temperature sensor is selected under the cooling, dry, or fan mode; while the wired controler temperature sensor is selected under the heating or auto mode. (03 is displayed in the timer area). The wired controller temperature sensor is selected under the cooling, dry, or fan mode; while the return air temperature sensor is selected under the heating mode. (04 is displayed in the timer display area). Under OFF state, you can go to the commissioning status by pressing "Function" and "Timer" for five seconds. Press "Mode" button until "01" 5+7 Function+Timer icon is shown in the temperature display area. The setting status is shown (Selection of Fan Speed) in the timer area. Press "" and "" button to adjust and two options are available: Three low levels (01) ; Three high levels (02). 3 Wire Zone Controller (DWCPX2) 3 Operation Instructions 3.1 ON/OFF Press ON/OFF to turn the unit ON and turn it OFF with another press. Note: The state shown in Fig. 4 indicates the OFF state of the unit after power on. The state shown in Fig. 5 indicates the ON state of the unit after power on. F F Fig. 4 OFF State Fig. 5 ON State 3.2 Mode Setting Under the ON state of the unit, press Mode to switch the operation modes in the following sequence:AutoCoolingDryFanHeating. Auto Cooling Dry Fan Heating 3.3 Temperature Setting Press or to increase/decrease the preset temperature. If you press either of these buttons continuously, the temperature is increased or decreased by 1°F(1°C) every 0.5 seconds, as shown in Fig. 6. In the Cooling, Dry, Fan or Heating mode, the temperature setting range is 61°F~86°F (16~30). In Auto mode, the setting temperature is not adjustable. 4 Wire Zone Controller (DWCPX2) F Fig.6 3.4 Fan Speed Setting In the ON/OFF state of the unit, press Fan, and the fan speed of the indoor unit changes sequentially as shown in Fig. 7. Low Middle High AUTO F Enter/Cancel Fan Mode Function Timer On/Off Fig.7 3.5 Timer Setting In the ON state of the unit, press Timer to set the timer OFF on the unit. Timer on setting: press Timer, and the LCD displays "xx.x hour", with "hour" blinking. In this Timer off setting: press Timer, if LCD won't display xx.x hour, it means the timer setting is canceled. Timer off setting under the "On" state of the unit is shown in Fig. 8. 5 Wire Zone Controller (DWCPX2) F F F F F Fig. 8. Timer off Setting in the ON State of the Unit Timer range: 0.5-24 hr. Every press of or increases or decreases the set time by 0.5 hr. If either button is pressed continuously, the set time increases/decreases by 0.5 hr every 0.5s. 6 Wire Zone Controller (DWCPX2) 3.6 Swing Setting Swing On: Press Function when the unit is ON to activate the swing function. In this case, Swing Off: When the Swing function is on, press Function to enter the Swing setting interface, with blinking. After that, press Enter/Cancel to cancel this function. Swing setting is shown as Fig. 9. F F F F F Fig. 9 Swing Setting Note: . Sleep, Turbo or Blow setting is the same as the Swing setting. . After the setting is made, press the "Enter/Cancel" key to go back to the setting status or quit automatically 5s later. 7 Wire Zone Controller (DWCPX2) 3.7 Sleep Setting Sleep on: Press Function when the unit is ON until the unit enters the Sleep setting Sleep off: When the Sleep function is activated, press Function to enter the Sleep setting interface. After that, press Enter/Cancel to cancel this function. In the Cooling or Dry mode, the temperature will increase by 1 after the unit runs under Sleep 1 setting for 1 hr and then 1 for another hour. After that, the unit will run at this temperature. In the Heating mode, the temperature will decrease by 1 after the unit runs under Sleep 1 setting for 1 hr and then 1 for or another hour. After that, the unit will run at this temperature. The Sleep setting is shown in Fig.10. F F F F F Fig. 10. Sleep Setting 8 Wire Zone Controller (DWCPX2) In the Cooling or Heating mode, press Function until the unit enters the Turbo setting interface When the Turbo function is activated, press Function to enter the Turbo setting interface and then press Enter/Cancel to cancel this function. The Turbo function setting is shown in Fig. 11. F F F F F Fig.11. Turbo Setting 9 3.9 This section left intentionally blank Wire Zone Controller (DWCPX2) 10 Wire Zone Controller (DWCPX2) 3.10 Blow Setting Blow function: After the unit is turned off, the water on the evaporator of the indoor unit is automatically evaporated to prevent mildew. In the Cooling or Dry mode, press Function until the unit enters the Blow setting interface and then press Enter/Cancel to active this function. When the Blow function is activated, press Function to the enter the Blow setting interface and then press Enter/Cancel to cancel this function. Blow function setting is as shown in Fig.13 F F F F F Fig.13. Blow Setting Notes: . When the Blow function is activated, if turning off the unit by pressing ON/OFF or by the zone controller, the indoor fan will run at the low fan speed for 2 min, with "BLOW" displayed on the LCD. While, if the Blow function is deactivated, the indoor fan is turned off directly. .Blow function is unavailable in the Fan or Heating mode. 11 Wired Zone Controller (DWCPX2) 3.11 Other Functions (1). Lock Upon startup of the unit without malfunction or under the "Off" state of the unit, press and at the same time for 5s till the wired zone controller enters the Lock function. In this case, LCD displays . Then, press these two buttons again at the same time for 5s to quit this function. Under the Lock state, pressing any other button won't get a response. (2). Memory Memory switchover: Under the "Off" state of the unit, press Mode and at the same time for 5s to switch memory states between Memory ON and Memory OFF. When this function is activated, Memory is displayed. If this function is not set, the unit is under the "Off" state after power failure and then power recovery. Memory recovery: If this function is set for the wired zone controller, the wired zone controller after power failure resumes its original running state upon power recovery. Memory contents: ON/OFF, Mode, set temperature, set fan speed, and Lock function. (3). Selection of the Temperature Sensor In the "Off" state of the unit, press both "Function" and "Timer" for 5s to go the commissioning status. In this status, adjust the display in the temperature display area to "00" through the "Mode" button and then adjust the option of the temperature sensor in the timer display area through the or . .Indoor ambient temperature is sensed at the return air inlet (01 in the timer display area). .Indoor ambient temperature is the sensed at the wired controller (02 in the timer display area). .Select the temperature sensor at the return air inlet under the cooling, dry and fan modes, while selecting the temperature sensor on the wired controller in the heating and auto modes (03 in the timer display area). .Select the temperature sensor on the wired controller under the cooling, dry, and fan modes, and select the temperature sensor at the return air inlet under the heating mode and auto modes (04 is displayed in the timer display area). Pressing the ON/OFF button also can quit this commissioning status, but the set data won't be stored. In the commissioning status, if there is no operation for 20 seconds after the last button is pressed, the unit goes back to the previous state without storing the current data. Note: After connecting to the indoor unit, if the type of ambient temperature sensor has not been set manually, the wired controller selects the ambient temperature sensor according to the model of the connected IDU. If controller connects to the cassette type IDU, duct type IDU, floor ceiling type IDU, or ceiling type IDU, it adapts to , otherwise it adapts to . If the type of ambient temperature sensor is set manually, the wired controller submits to the manual setting, and will not set according to automatic IDU model selection. 12 Wired Zone Controller (DWCPX2) 01: Three low fan speeds; 02: Three high fan speeds Pressing the ON/OFF button can exit this commissioning status, but the set data won't be stored. In the commissioning status, if there is no operation for 20 seconds after the last button is pressed, the unit goes back to the previous state without storing the current data. 4 Installation and Removal 4.1 Connection of Signal Line of the Wired Zone Controller Open the cover of the electric control box of the indoor unit. Guide the single line of the wired zone controller through the rubber ring. Connect the signal line of the wired zone controller to the 4-pin socket of the indoor unit. Tighten the signal wire with ties. The communication distance between the main board and the wired zone controller can extend up to 65 ft. (the standard distance is 26-1/4 ft.). 4.2 Installation of the Wired Zone Controller PVC Pipe 1 2 3 4 5 No. Name Fig.14. Accessories for the Installation of the Wired Zone Controller Table 3 1 Socket box embedded in the wall 2 Backplate of the Wired Zone Controller 3 Screw cover 20×20×2 Screw M4X25 4 Front Panel of the Wired Zone Controller 5 Screw ST2.9X6 13 Wired Zone Controller (DWCPX2) 1 2 3 4 7 6 5 Note CN1 is 485 communication interface and it is used for connecting the 4-core communication wire. These two 2-pin connectors (CN2, CN3) are used for connecting the smart zone controller. There is no sequence for these two 2-pin connectors. You can connect one or two 2-pin connectors based on the requirement. 8 9 10 Fig.15 Fig.15 shows the installation steps of the wired zone controller, but there are some issues that need your attention. 1. Prior to the installation, first DISCONNECT THE POWER SUPPLY of the wire buried in the installation opening. No operation should be performed with the power on during the entire installation. 2. Pull out the four-core twisted pair line from the installation opening and then place it through the rectangular opening behind the backplate of the wired zone controller. 3. Place the back plate of the wired zone controller on the wall over the installation opening and secure it with M4X25 screws. 4. Insert the four-core twisted pair line into the slot of the wired zone controller and then secure the front panel and the backplate of the wired zone controller together. 5. Finally, secure the front panel and the backplate of the wired zone controller tightly with ST2.9X6 screws. 14 Smart zone controller Wired Zone Controller (DWCPX2) Fig.16 Fig.16 shows the schematic diagram of control system connections. DWCPX2 can connect the smart zone controller (integrated control system). "n" indicates the number of communication node addresses (programmable wired controller DWCPX2). The complete system is composed of the smart zone controller, wired controller DWCPX2, and communication cable. The wired controller DWCPX2 can support 16 communication node addresses at most (n16). Terminal A and terminal B of the smart zone controller are connected, respectively, to the corresponding communication 2-pin connector terminal of the #1 wired controller by the communication cable; the other 2-pin connector of #1 wired controller is connected to the #2 wired controller through the telecommunication cable, and so forth, until connected to the #n wired controller. Except the last wired controller in the control system (only use CN2 or CN3, and the other one is not connected), there's no sequence or importance for the wired controller. The series number in the figure is only for the sake of clarity. Fig.17 Fig.17 shows schematic diagram of DIP switch. There is a 2-bit DIP switch on the main board of wired controller DWCPX2. As for the last #n wired controller in the control system, the 1-bit and the 2-bit of the DIP switch should be manually pulled to position ON and position OFF respectively. The DIP switches of other wired controllers should be kept at the initial ex-factory status (1-bit and 2-bit are set at position OFF). CAUTION! Please pay special attention to the followings during the connection to avoid the malfunction of the air conditioning unit due to electromagnetic interference. Separate the signal and communication lines of the wired zone controller from the power 15 Wired Zone Controller (DWCPX2) cord and connection lines between the indoor and outdoor unit, with a minimum distance of 8 in. (20 cm); otherwise, the communication of the unit may work abnormally. If the air conditioning unit is installed where it is susceptible to electromagnetic interference, then the signal and communication lines of the wired zone controller must be shielding twisted pair lines. 4.3 Removal of Wired Zone Controller 1 2 3 4 5 Errors Display If an error occurs during operation of the system, the error code is displayed on the LCD, as shown in Fig.18. If multiple errors occur at the same time, their codes are displayed sequentially. Note: If an error code is displayed, reference the following Table 4 for error code explanation, and contact you service representative for further assistance. EEnntteer/ccaanncceel l Fan Mode Function Timer Fig.18 On/Off 16 Wired Zone Controller (DWCPX2) Table 4. Meaning of Each Error Error Error Code Error Error Code Return air temperature sensor open/short circuited F1 Drive board communication error P6 evaporator temperature sensor open/short circuited F2 Compressor overheating protection H3 Indoor unit liquid valve temperature sensor open/short circuited b5 Indoor and outdoor units unmatched LP Indoor gas valve temperature sensor open/ short circuited b7 Communication line misconnected or expansion valve error dn IPM temperature sensor open/short circuited P7 E7 Outdoor ambient temperature sensor open/ short circuited F3 Pump-down Fo Outdoor unit condenser mid-tube temperature sensor open/short circuited F4 Defrost or oil return Discharge temperature sensor open/short circuited F5 Forced defrosting H1 Indoor and outdoor communication error E6 Compressor startup failure Lc DC bus under-voltage protection PL High discharge temperature protection E4 DC bus over-voltage protection PH Overload protection E8 Compressor phase current sensing circuit error U1 Whole unit over-current protection E5 Compressor demagnetization protection HE Over phase current protection P5 PFC protection Hc Compressor desynchronizing H7 IPM Temperature Protection Over-power protection System charge shortage or b l o c k a g e protection Capacitor charging error High pressure protection Low pressure protection Compressor stalling Over-speeding Drive board temperature sensor error P8 IPM Current protection H5 L9 Compressor phase loss/ r e v e r s a l protection Ld F0 Frequency restricted/reduced with whole unit current protection F8 PU Frequency restricted/reduced with IPM current protection En E1 Frequency restricted/reduced with high discharge temperature F9 E3 Frequency restricted/reduced with antifreezing protection FH LE Frequency restricted/reduced with overload protection F6 LF Frequency restricted/reduced with IPM temperature protection EU PF Indoor unit full water error E9 AC contactor protection P9 Anti-freezing protection E2 Temperature drift protection PE AC input voltage abnormal PP Sensor connection protection Pd Whole unit current sensing circuit error U5 DC bus voltage drop error U3 4-way valve reversing error U7 Outdoor fan 1 error protection L3 Motor stalling H6 Outdoor fan 2 error protection LA PG motor zero-crossing protection U8 compressor inhalation temperature sensor error dc 17 © 2018 Johnson Controls, Inc. 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