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20012301
Vermont Castings DVR28 Direct Vent Gas Fireplace
Troubleshooting AF4000 Valve
(continued)
Room temperature dis-
played on handheld trans-
mitter is not correct. (When
using Thermostatic transmi-
iters only).
Unit will not respond in
THERMO mode. Thermo-
static transmitters only).
•
Ensure the transmitter was not recently stored in a different environment (air-con-
ditioned, heated) from that in which the transmitter is being tested. It may take up
to 3 hours for the temperature inside a packaged transmitter, and several minutes
for an unpackaged transmitter, to equalize with the room temperature.
•
Ensure the thermostatic transmitter is within the 20’ (6 m) operational range.
•
Make sure an ON or OFF command was not last sent from another transmitter.
These commands will over-ride the thermal commands from the handheld trans-
mitter. To return the system to THERMO mode, press either ON or OFF on the
thermostatic transmitter, then press the MODE button to put the system in THER-
MO mode. Press and hold the SET button to change the set temperature. (Fig. 43)
•
Verify the set temperature on the thermostatic remote is at least 2 degrees above
or below the room temperature. The system will not react to temperatures within 2
degrees of the set temperature.
Figure 43: Hand Transmitter
AAA
AAA
12V (A23)
FP1765
transmitter back
2/07
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ON H/L
OFF/CONTINUOUS
PILOT BUTTON
MODE
SET
ON
OFF
HI
LOW
ON
OFF
FP1768
transmitter front
2/07
FP1765
LCD Display
ON HI/LO
Button
OFF/Continuous
Pilot Button
Mode Button
Set Button
FP1768
Front
Back
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Figure 44: Continuous Pilot Indication on LCD Screen
FP1770
