Vermont Casting 3976 Fan Override During Auto Mode, Change Between F/C Temperature Units

Models: 3966 4080 3926 3936 3960 3970 4065 3976 4070 3930 4075 PDV20: 3920 SDVR

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Auto Mode

Pinnacle & Stardance Direct Vent - Rear Vent Gas Heaters

Auto Mode

In the AUTO mode, the room temperature, set tempera- ture, flame and fan levels will be shown. AUTO will appear next to both the flame and fan icons.

When the control is in the AUTO mode, the main burner will turn on/off or modulate based on the heat needed to maintain the set temperature. The flame level will change automatically to optimize the heat output needed to maintain the set temperature. To change the set temperature, press the up or down key. Pushing a key once will change the temperature by one degree.

In the AUTO mode, the fan speed will increase with increasing flame height or decrease with decreasing flame height. “AUTO” is displayed next to the flame and fan icons.

Fan Override During Auto Mode

If a lower or higher fan speed is desired when operating in the AUTO mode, the fan speed can be overridden by pushing the fan button followed by the up or down key.

Pushing a key once will change the fan level by one unit. In this mode “AUTO” is displayed next to the flame icon and “MANUAL” is displayed next to the fan icon.

Change Between F/C Temperature Units

Push the up and down arrow keys simultaneously for at least 3 seconds to toggle between Fahrenheit and Celsius units.

Disable Thermostat Function

To disable the thermostat function in the AUTO mode, push the time and down keys simultaneously for at least 3 seconds.

To Change Batteries

1.Remove cover on the backside of the transmitter. Install 3 AAA batteries as shown and reattach cover.

2.Once steps 1-3 in OPERATION are completed, receiver/valve and transmitter are now ready. Press any button on transmitter for recognition process to occur between the receiver/valve and transmitter.

3.Use functions as described in TRANSMITTER section.

Troubleshooting

1.Locate LED light on valve.

2.LED will blink after every valid command received by the transmitter; this is not an error.

3.Failure codes may occur anytime after pilot burner is lit.

4.Sequence is failure code followed by light not blinking for 30 seconds.

5.In the event of multiple failure codes, next failure code follows previous failure code by approximately 3 seconds.

 

Pilot

 

Assembly

 

Fan

 

FAN

 

Red

 

White

 

Red

 

White

 

White Dots

 

Antenna

 

Valve

FP1038

(Bottom View)

 

Fig. 55

Comfort Valve wiring diagram.

If an Error Code 3 is observed while performing the testing, complete the following:

1.Make sure the spade connectors are pushed all the way on. If rhe Error Code 3 is still showing, then go to the next step.

2.Switch the front two thermopile leads with the back two. Be sure the white lead is connected to the spade with the white dot next to it. If the Error Code 3 is still showing, replace the thermopiles.

If an Error Code 8 is observed while performing the testing, complete the following:

1.Confirm the valve is not in REMOTE mode.

If the valve is producing Error Code 8 and in REMOTE mode, the valve is defective and should be replaced.

If the valve is in LOCAL mode and producing Error Code 8, then go to the next step.

2.Slide the Remote/Local switch to REMOTE and teach the valve a transmitter (see item 6, page 1). The Error Code will clear itself after approximately 1.5 minutes and return to normal operation.

LED Count

Service Action

8 Replace valve

7Confirm stepper motor connection exists

5Confirm fan connection exists and works

4Confirm gas type; jumper in place

3Replace thermopiles

2Turn fan ON

NOTE: Some keys are not active.

20007066

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Vermont Casting 3976 Fan Override During Auto Mode, Change Between F/C Temperature Units, Disable Thermostat Function