Honeywell RM7897A Installation Instructions Manual page 17

Table 8. Blinking Fault Codes and Recommended Troubleshooting. (Continued)
Fault Code System Failure
Code 4-1 No purge card or
*Purge Card the purge card
Problem* timing has
changed from
the original
configuration.
Code 4-2 Pilot (ignition)
*Wiring valve terminal,
Problem/Int main valve,
ernal Fault* ignition or Main
Valve 2 was on
when it should
be off.
Code 4-3 Flame not
*Flame sensed, or
Amplifier sensed when it
Problem* should be on or
off.
Code 4-4 The
*Configurati configuration
on Jumper jumpers differ
Problem* from the sample
taken at startup.
Code 5-1 Preignition
*Preignition Interlock fault.
Interlock*
Code 5-2 Either High Fire
*High Fire Switch or Low
Sw. or Low Fire Switch
Fire Sw.* failure.
Code 5-3 Man-Open
*Man-Open Switch, Start
Sw.; Start Sw. Switch or
or Control Control On in the
On* wrong
operational
state.
Code 6-1 Relay Module
*Internal self-test failure.
Faults*
Code 6-2 Relay Module
*Internal Self-Test failure.
Faults*
1. Make sure the purge card is seated properly.
2. Inspect the purge card and the connector on the relay module for any damage or contam-
inants.
3. Reset and sequence the relay module.
4. If the fault code reappears, replace the purge card.
5. Reset and sequence the relay module.
6. If the fault code persists, replace the relay module.
WARNING
Electrical Shock Hazard; Fire or Explosion Hazard.
Can cause severe injury, death or property damage.
Remove system power and turn off power supply.
1. Remove system power and turn off fuel supply.
2. Check wiring; correct any errors.
3. inspect Pilot Fuel Valve(s), both places, and connections.
4. Reset and sequence the relay module.
5. If the fault persists, replace the relay module.
1. Check wiring; correct any errors.
2. Make sure the flame amplifier and flame detector are compatible.
3. Remove the flame amplifier and inspect the connections. Reseat the amplifier.
4. Reset and sequence the relay module.
5. If the code reappears, replace the flame amplifier and/or the flame detector.
6. If the fault persists, replace the relay module.
1. Inspect the jumper connections. Make sure the clipped jumpers were completely
removed.
2. Reset and sequence the relay module.
3. If the fault persists, replace the relay module.
1. Check wiring and correct any errors.
2. Check Preignition Interlock switches to assure proper functioning.
3. Check fuel valve operation.
4. Reset and sequence the relay module; monitor the Preignition Interlock status.
5. If the fault persists, replace the relay module.
1. Check wiring and correct any errors.
2. Reset and sequence the relay module.
3. Use manual motor potentiometer to drive the motor open and closed. Verify at motor
switch that the end switches are operating properly. Use RUN/TEST switch if manual
potentiometer is not available.
4. Reset and sequence the relay module.
5. If the fault persists, replace the relay module.
1. Check wiring and correct any errors.
2. Make sure that the Manual Open Valve Switch, Start Switch and Control are operating
properly.
3. Stat Switch held "On" too long.
4. Reset and sequence the relay module.
5. Reset and sequence the relay module. If the fault persists, replace the relay module
(RM7838A1014; RM7838B1013 or RM7838C1004 only).
1. Reset and sequence the relay module.
2. If fault reappears, remove power from the device, reapply power, then reset and sequence
the relay module.
3. If the fault persists, replace the relay module.
1. Reset and sequence the relay module.
2. If fault reappears, remove power from the device, reapply power, then reset and sequence
the relay module.
3. If fault does not repeat on the next cycle, check for electrical noise being copied into the
relay module through the external loads or possibly an electrical grounding issue.
4. If the fault persists, replace the relay module.
17
RM7897A,C 7800 SERIES RELAY MODULES
Recommended Troubleshooting
32-00158—03