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Troubleshooting AF4000 Valve
Pilot flame is always on/ will
not extinguish
Main flame will not light
Flame height adjustment will
not work/works backwards
Figure 41: Battery Pack - Battery Compartment
Selector Switch
Figure 42: AF4000 Valve Face
20012301
(continued)
•
Ensure the CONTINUOUS PILOT switch on the control module (Fig. 37) is set
to OFF.
•
Verify the gas supply is turned on.
•
Ensure the pilot flame will ignite. If not, see pilot flame troubleshooting above.
•
Make sure the green and white leads from the module are securely connected to
the terminals labeled "MAIN: on the valve body. (Fig. 42)
•
Make certain the pilot flame is in contact with the flame rectification sensor on
the pilot assembly. This valve is equipped with a pilot flame adjustment screw.
(Fig. 42) If the pilot flame is too small it will not contact the flame rectification
sensor and will not complete the safety circuit.
•
Ensure the pilot flame is properly located to ignite the main flame.
•
Ensure the black and red leads from the battery pack or the AF4000 110H/L
module are securely connected to the red and black leads from the motor drive
or H/L latching solenoid located on the valve body (red to red and black to
black).
•
Verify the selector switch on the battery pack is set to DC MOTOR DRIVE or
LATCHING SOLENOID, depending upon which device is installed. (Fig. 41)
•
Check functionality with all transmitters to determine if there is an issue with the
main control system or an individual transmitter. If the issue is with an individual
transmitter, make sure the batteries in both the transmitter and receiver are in-
stalled in the proper direction (Fig. 41, 43) and are not drained. Individual battery
voltage should be no less than 1.4V for AA and AAA batteries, 2.8V for button
cells, and 9.0V for 12V batteries.
+
-
+
-
Main Connection
Inlet
Pilot Adj.
PILOT
Outlet
Pilot Connection
FP1769
AF4000 valve face
Vermont Castings DVR28 Direct Vent Gas Fireplace
Battery Pack - Back
HI/LO Connection
BLACK WIRE
FP1767
battery pack
2/07
MAIN
FP1769
HI/LO Connection
RED Wire
4 Pin AUX
Connection
FP1767
27
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