Install Instructions

RM7898A 7800 SERIES VALVE PROVING PRIMARY RELAY MODULES
19 66-1161—04
Code 2-3
*Flame Signal
Overrange*
Flame signal value is
too high to be valid.
1. Make sure the flame detector and flame amplifier are compatible.
2. Remove the flame amplifier and inspect its connections. Reset the flame
amplifier.
3. Reset and sequence the Relay Module.
4. Check the flame detector sighting position; reset and recycle. Measure flame
strength. Verify that it meets specifications. If not, refer to the flame detector
and/or flame amplifier checkout procedures in the installation instructions.
5. If the code reappears, replace the flame amplifier and/or the flame detector.
6. If the fault persists, replace the Relay Module.
Code 3-1
*Running/
Interlock Switch
Problem*
Running or Lockout
Interlock fault during
Pre-Purge.
1. Check wiring; correct any errors.
2. Inspect the fan; make sure there is no air intake blockage and that it is supply-
ing air.
3. Make sure the Lockout Interlock switches are functioning properly and the
contacts are free from contaminants.
4. Reset and sequence the Relay Module to Pre-Purge (place the TEST/RUN
Switch in the TEST position, if available). Measure the voltage between
terminal 7 and G (ground); 120 Vac should be present. Switch TEST/RUN
back to RUN.
5. If steps 1 through 4 are correct and the fault persists, replace the Relay Mod-
ule.
Code 3-2
*Running/
Interlock On
During
Standby*
Lockout Interlock
powered at improper
point in sequence or On
in Standby.
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 Relay Module.
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 when 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.
Code 3-3
*VPS in
Improper State*
VPS (Valve Proving
Switch) in wrong state
during VPS Test.
1. Check wiring, making sure upstream valve is connected to terminal 9 and
downstream valve is connected to terminal 17.
2. Conduct Valve Seat leakage test using a manometer.
3. Reset and sequence the Relay Module; if fault repeats, test VPS (connected to
terminal 16) is functioning properly; replace if necessary.
4. Reset and sequence the Relay Module.
5. If fault persists, replace the Relay Module.
Code 4-1
*Purge Card
Problem*
No purge card or the
purge card timing has
changed from the
original configuration.
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.
Code 4-2
*Wiring
Problem/
Internal Fault*
Pilot (ignition) valve
terminal, main valve,
ignition or Main Valve 2
was on when it should
be off.
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.
Code 4-3
*Flame
Amplifier
Problem*
Flame not sensed, or
sensed when it should
be on or off.
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.
Table 9. Blinking Fault Codes and Recommended Troubleshooting. (Continued)
Blink Code System Failure Recommended Troubleshooting