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TROUBLE SHOOTING
PROBLEM
1. Off on limit (120VAC)
2. Bad transformer
NO POWER
3. Loose or broken connections
Between 4&1
4. Blown fuse or circuit breaker
5. Disconnect switch off
6. Harness not plugged into receptacle
1. Thermostat not calling for heat
NO POWER
2. Burned out heat anticipator
Between 4&2
3. Loose or broken connections
POWER
4. Off/On operating limit, pressure con-
Between 4&1
When Calling For
5. Off/On blocked vent switch or fl ame
Heat
POWER
Between 4&1
1. Loose or broken connection
Between 4&2
2. Defective damper motor
DAMPER OPEN
WARNING: For trouble shooting only. Make sure damper is in the open position. Use the service
switch to keep the damper in the open position. Place a jumper between 2 & 3. If the appliance fi res,
remove jumper & plug receptacle back into damper controller plug. If appliance does not fi re, replace
damper motor assembly. Do not replace the pipe assembly.
If a damper motor assembly is not available, place the service switch in the hold open position. This should
keep the damper in the open position and allow the customer to have automatic heat. Return or replace the
motor assembly at your convenience. The motor assembly carries an 18 month limited commercial warranty
from the original date of purchase. (Refer to form #4294 on website) Pipe assembly will not be warranted.
FOR TROUBLE-SHOOTING WITH A JUMPER WIRE IN PLACE
PROBLEM
1. Is gas turned on
POWER ON
2. Operating limit, pressure control, or
Between 4&1
Between 4&2
3. Blocked vent switch or fl ame roll out
Between 4&3
DAMPER OPEN
4. Loose or broken connection
NO COMBUSTION
5. Defective component in appliance
1. Something obstructing damper blade
2. Damper pipe egg shaped
Damper Sticks
3. Crimped end of vent pipe inserted in
Damper Rotates
1. Defective damper motor assembly
Continuously
*If all steps have been tried and the vent damper problems persist, call our technical support at 1-800-742-8368.
IMPORTANT: Damper must be OPEN before combustion can take place.
POSSIBLE CAUSE
trol or low water cut off
roll out
POSSIBLE CAUSE
low water cut off not on
switch tripped
after the vent damper
Out of round/binding
too far
1. Turn limit on
2. Replace transformer
3. Tighten, repair, or replace connection
4. Replace fuse or reset circuit breaker
5. Turn switch on
6. Plug harness in
1. Turn thermostat up to call for heat
2. Replace thermostat
3. Tighten, repair, or replace connection
4. Turn operating limit, pressure control, or
lower water cut off on
5. Reset or replace switch
1. Tighten, repair, or replace connection
2. Replace damper motor assembly
1. Make sure gas is on
2. Make sure operating limit, pressure
control or low water cut off is on
3. Reset or replace blocked vent switch or
fl ame roll out switch
4. Tighten, repair, or replace connection
5. Replace defective component in
appliance
1. Turn thermostat up to call for heat.
2. Replace thermostat.
3. Tighten, repair or replace connection.
4. Turn operating limit, pressure control or
lower water cut off on.
5. Reset or replace switch.
1. Replace damper motor assembly
page 9 of 20
RECOMMENDED SOLUTION
RECOMMENDED SOLUTION
P/N 46352700 Rev J 05/19
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