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PDX Series
LED Status
Six-one flash, three
second pause
Six-two flash, three
second pause
Six-three flash, three
second pause
Six-four flash, three
second pause
Seven flash, three second
pause
Eight-one flash, three
second pause
Eight-three flash, three
second pause
Eight-four flash, three
second pause
14
Control Status
1. Unstable pilot.
2. Pilot tube blocked or restricted.
Failed to light pilot.
3. Oxidation build up on pilot electrode.
System auto resets.
4. Wire damage to pilot assembly or bad
connection at gas valve.
1. Vent blockage or improper vent configuration.
Pressure switch
2. Pressure switch tubing kinked or blocked.
or blower temp
3. Faulty pressure switch.
switch opened
4. Vent termination being affected by wind
during burner
5. Blower not spinning up to speed.
operation.
6. Blower temp or exhaust temp too high
System auto
7. Faulty blower temperature switch.
resets.
8. Insufficient combustion air.
1. Unstable pilot.
2. Pilot tube blocked or restricted.
Pilot flame
3. Oxidation build up on pilot electrode.
extinguished.
4. Wire damage to pilot assembly or bad
System auto
connection at gas valve.
resets.
5. Insufficient combustion air.
6. Gas pressure is out of specification.
Undesired-false
pilot flame
sensed.
Pilot valve stuck in open position.
System auto
resets.
* Indicates gasoline vapors were detected at potentially
explosive levels.
Flammable Vapor
* Verify no gasoline vapors are still present
Sensor fault
* Reset the control by cycling power to the appliance or
detected
by cycling the ON/OFF switch.
* Replace the Flammable Vapors Sensor element if a
gasoline spill event occurred.
* Verify Flammable Vapor Sensor (FVS) resistance is
Flammable Vapor
not below 25 K Ohms.
Sensor out of
* Check wiring to FVS and insure it is not shorted.
specification.
* Replace control if everything above checks out OK.
Thermal well
1. Damage to thermal well wire.
sensor damaged
2. Thermal well sensor resistance out of range.
or unplugged
Gas valve
1. Control needs to be reset.
electronics fault
2. Control is wet or physically damaged.
detected
Gas valve fault
1. Control needs to be reset.
detected.
2. Control is wet or physically damaged.
Probable Cause
WARNING: EXPLOSION HAZARD
Troubleshooting
Service
Procedure
1. Page 15
2-4. Page 17
1. Check vent or vent tables.
2 & 3 Page 18
4. Refer to venting section of
installation manual
5. Page 20
6 & 7 Page 22
8. Refer to installation
manual.
1. Page 15
2-4. Page 17
5. Refer to installation manual
Replace gas control,
page 26
Page 28
Page 28
Page 24
1. Interrupt power supply
2. Replace gas control,
page 26
1. Interrupt power supply
2. Replace gas control,
page 26
Page 14
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