System Checkout - Honeywell R7120M 7800 Serie Instructions D'installation

Table 7. Blinking Fault Codes and Recommended Troubleshooting. (Continued)
Fault Code System Failure
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, or
Problem/ ignition was on when it
Internal Fault* should be off.
Code 4-3 Flame not sensed, or
*Flame sensed when it should
Amplifier be on or off.
Problem*
Code 4-4 The configuration
*Configuration jumpers differ from the
Jumper sample taken at startup.
Problem*
Code 5-1 Not Applicable
Code 5-2 Not Applicable
Code 5-3 Not Applicable
Code 6-1 Relay Module self-test
*Internal Faults* failure.
Code 6-2 Relay Module Self-Test
*Internal Faults* failure.
Code 6-3 Not Applicable
Code 6-4 Unused at this time.
Code 7-7 Unused at this time.

SYSTEM CHECKOUT

WARNING
Explosion Hazard.
Can cause serious injury or death.
Do not allow fuel to accumulate in the combustion
chamber for longer than a few seconds without igniting
to prevent danger of forming explosive mixture. Close
manual fuel shutoff valve(s) if flame is not burning at
Recommended Troubleshooting
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 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. 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.
—
—
Open master switch before removing or installing R7120 Relay
Module or Keyboard Display Module connector.
11
R7120M 7800 SERIES RELAY MODULES
end of specified time.
WARNING
Electric Shock Hazard.
Can cause serious injury or death.
Use extreme care while testing system. Line voltage is
present on most terminal connections when power is on.
66-1193EF—01