Skytech II AF-4000TRHH Gas Fireplace Remote Control Transmitter User Manual
Skytech II, Inc. Gas Fireplace Remote Control Transmitter
user manual

AF-4000TRHH Operation description 
Modified by Javy 2008/04/11 
This remote control SYSTEM offers the user a battery-operated 
remote control that operates most millivolt gas valves used in 
some heater rated gas logs, gas fireplaces and other gas heating 
appliances. 
The transmitter operates on (2) 1.5V AAA batteries. 
It is recommended that ALKALINE batteries always be used 
for longer battery life and maximum operational performance. 
Before using the transmitter,  install the (2) AAA transmitter 
batteries into the battery compartment. (Use caution that 
batteries are installed in the proper direction) 
KEY SETINGS 
MODE 
Changes unit to ON / Thermo / OFF 
mode position. 
UP / DOWN 
Changes temperature, time(r) and other 
functions’ value. 
Fn 
Changes each function by the key and 
uses UP/DOWN key to change that’s value. 
SET 
Sets temperature, time(r) and other functions. 

LCD 
1. SUN/MON/TUE/WED/THU/FRI/SAT 
 Indicates the day. 
2. P1/P2 
Indicates program is enable or not in own     
period time. 
3. TIMER / TIME 
Appears the time and the countdown timer. 
4. ON / THERMO / OFF 
 Indicates current mode 
5. ROOM °F OR °C 
Indicates current room temperature. 
6. SET °F OR °C 
Appears the desired temperature to indicate   
setting room temperature during the time of   
setting in the thermo operation. 
7. Battery icon 
      Indicates the battery is low or not 
8. Swing 
Indicate the swing scale between require temperature and room temperature. 
9. Continuous Pilot 
Indicates continuous pilot enable/disable. 
10. AUX 
Indicate the Auxiliary equipment is enable or not. 
11. LIGHT 
Indicates light/valve in operation. 
12. FAN 
Indicates Fan/valve in operation. 
13. REAR 
Indicates Rear burner/valve in operation. 
14. MAIN 
Indicates Main burner/valve in operation. 
MANUAL FUNCTION 
Initial Setup 
Hold SET and UP buttons simultaneously for 5 seconds to enter set-up. Each function scale setting is 
changed by “UP” or “DOWN” key. 
Setting of C/F conversion: 
C/F conversion: Use UP or DOWN key to choose Celsius or Fahrenheit, Press "SET" button to continue to 
gas type setup. 
Setting of Swing Scale: 
Swing Scale: Use UP of DOWN key to change the swing value (1° to 3°F (1° to 2°C), Press "SET" button 
to continue to clock set up. 
Clock Setup:   
Use UP of DOWN key to select the day of the week. 
Use UP or DOWN key to set HOUR, then press SET to enter “Minute” setting. 
Use UP or DOWN key to set “Minute”, and then press SET to enter AM/PM setting. 
Use UP or DOWN key to set AM/PM, the press SET to enter day of week setting. 
Mode 
To operate the system in the manual “MODE” does the following. 
ON OPERATION 
Press the “MODE” key into the ON mode. The appliance flame and fan will come on. During this 
time the screen will show ON. All the functions could be chosen that MAIN FLAME/ REAR FLAME / 
FAN/ LIGHT/ AUX/ TIMER /Program, will be active. 
 THERMO OPERATION 
Press the “MODE” key into the THERMO mode. The transmitter will check the ROOM temperature 
and SET temperature to decide the situation THERMO ON or THERMO OFF. After 2 seconds the LCD 
screen will display the situation by temperature detected that is comparing with the SWING temperature 
scale. 
OFF OPERATION 

Press the “MODE” key into the OFF mode. The appliance flame and fan will shut off. During this 
time the screen will show OFF. All the functions, MAIN FLAME/ REAR FLAME / FAN/ TIMER, will be 
shut down exception of LIGHT/ Aux/ Program functions. 
 THERMOSTAT FUNCTION 
SETTING DESIRED ROOM TEMPERATURE 
This remote control system can be thermostatically controlled when the transmitter is in the 
THERMO mode. To set the THERMO MODE and DESIRED room temperature, 
During the THERMO mode, Press “Up” / “DOWN” key the LCD screen set numbers will increase / 
decrease between 45° and 99°(*) then loop the temperature. 
THERMO ON situation 
During this mode the screen will display the set flame/valve, rear flame/valve, and fan/value at the 
same time enable the functions setting. 
THERMO OFF situation 
During the situation the functions,    MAIN FLAME/ REAR FLAME / FAN, will be shut down 
exception of LIGHT/ AUX/ Program functions 
NOTE: (*) The highest SET temperature is 99° Fahrenheit (32° Celsius) and the lowest temperature is (45° 
Fahrenheit (6° Celsius) 
FCC Compliance Statement: 
This device complies with Part 15 of the FCC Rules.  Operation is subject to the 
following two conditions: (1) This device may not cause harmful interference, and (2) 
This device must accept any interference received, including interference that may 
cause undesired operation. 
Note: The manufacturer is not responsible for any radio or TV interference caused by 
unauthorized modifications to this equipment.  Such modifications could void the 
user’s authority to operate the equipment.