Honeywell 7800 Series Installation Instructions Manual page 9

Table 3. RM7896D1027 Blinking Fault Codes and Recommended Troubleshooting. (Continued)
Fault Code System Failure
Code 3-2 Lockout interlock
*Running/ powered at improper
Interlock On point in sequence.
During
Standby*
Code 4-1 No purge card or the
*Purge Card purge card timing has
Problem* changed from the
original configuration.
Code 4-2 Pilot (ignition) valve
*Wiring terminal, Main valve,
Problem/ Ignition or Pilot Valve 2
Internal Fault* was on when it should
be off.
Code 4-3 Flame not sensed, or
*Flame sensed when checked.
Amplifier
Problem*
Code 4-4 The configuration
*Configuratio jumpers differ from the
n Jumper sample taken at
Problem* startup.
Code 4-5 Installed subbase is
*Incompatible incompatible with this
Subbase* relay module.
Code 6-1 Relay Module self-test
*Internal failure.
Faults*
Recommended Troubleshooting
1. Check wiring to make sure that the Lockout Interlocks are connected
properly between terminals 6 and 7. Correct any errors.
2. Reset and sequence the RM7896D.
3. If the fault persists, measure the voltage between terminal 6 and G
(ground), then between terminal 7 and G. If there is 120 Vac at terminal 6
when the controller is off, the controller switch may be bad or is jumpered.
4. If steps 1 through 3 are correct and there is 120 Vac at terminal 7 while the
controller is closed and the fault persists, check for a welded or jumpered
Running Interlock or Airflow Switch. Correct any errors.
5. If steps 1 through 4 are correct and the fault persists, replace the relay
module.
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 contaminants.
3. Reset and sequence the RM7896D.
4. If the fault code reappears, replace the purge card.
5. Reset and sequence the RM7896D.
6. If the fault code persists, replace the relay module.
WARNING
Electrical Shock Hazard, Fire or Explosion Hazard.
Can cause serious injury, death or equipment 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 RM7896D.
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 RM7896D.
5. If the code reappears, replace the flame amplifier and/or the flame detec-
tor.
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 RM7896D.
3. If the fault persists, replace the relay module.
1. Check that the subbase matches the installed Relay module series.
2. Replace the relay module with a compatible model.
1. Reset and sequence the RM7896D.
2. If fault reappears, remove power from the device, reapply power, then reset
and sequence the RM7896D.
3. If the fault persists, replace the relay module.
9
7800 SERIES RM7896D RELAY MODULE
32-00208-01