CleaverBrooks ProFire Q Series, Installation Operation & Maintenance

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750-437
Q Series Full Modulation
6-7
Troubleshooting
7
Any # Loss of flame
1) Increase the setting of parameter 186:01 (fuel 0) or 187:01 (fuel 1). This increases the
FFRT. A maximum setting of 30 equals a 4 second FFRT.
2) Check the flame detector signal in the presence of a known flame source. Replace the
flame detector if it does not produce the anticipated signal.
0 Loss of flame
3 Loss of flame (software version V02.00)
3-255
Loss of flame due to TUV test (loss of
flame test)
12
Any # Valve proving A fault occurred related to valve proving. See diagnostic codes for more information.
0 Fuel valve 2 (V2) leaking
The downstream gas valve failed valve proving with the low gas switch doubling as the
valve proving switch (parameter 236 = 2). See diagnostic code 83 for corrective action.
1 Fuel valve 1 (V1) leaking
The upstream gas valve failed valve proving with the low gas switch doubling as the valve
proving switch (parameter 236 = 2). See diagnostic code 81 for corrective action.
2 Valve proving not possible
Valve proving is activated, but no input is assigned for the valve proving switch.
3 Valve proving not possible
4 Valve proving not possible
Valve proving is activated, but multiple inputs are assigned for the valve proving pressure
switch (parameter 236/336 = 2 and parameter 237/337 = 3). Change parameter 236/
336 to a 1.
5 Valve proving not possible
81 Fuel valve 1 (V1) leaking
The upstream gas valve failed valve proving:
1) Bubble test the gas valve to ensure the valve is not leaking. If the valve is leaking,
replace the valve.
2) Ensure that the setpoint of the valve proving pressure switch is set to 50% of the inlet
pressure to the upstream valve.
83 Fuel valve 2 (V2) leaking
The downstream gas valve failed valve proving:
1) Bubble test the gas valve to ensure the valve is not leaking. If the valve is leaking,
replace the valve.
2) Ensure that the setpoint of the valve proving pressure switch is set to 50% of the inlet
pressure to the upstream valve.
14
Any # POC
A fault occurred related to a proof-of-closure (POC) switch. See diagnostic codes for more
information.
0 POC open
The POC input X5-02.2 is open when it should be closed:
1) If no POC switches are being used, change setting of parameter 237.
2) Check wiring to the fuel valves. Ensure fuel valves are wired to the correct terminal (see
Section 2 for wiring diagrams). With the manual shutoff valves closed, ensure that the fuel
valves are closing in the proper phase (see Section 3 for sequence diagrams).
3) Ensure POC switches are closing when the valve closes. If this does not happen, check
1 POC closed
The POC input X5-02.2 is closed when it should be open:
1) If no POC switches are being used, change setting of parameter 237.
2) Check wiring to the fuel valves. Ensure fuel valves are wired to the correct terminal (see
Section 2 for wiring diagrams). With the manual shutoff valves closed, ensure that the fuel
valves are opening in the proper phase (see Section 3 for sequence diagrams).
3) Ensure POC switches are opening when the valve opens. If this does not happen, check
64 POC open - prevention of startup
The POC input X5-02.2 was open when a call for heat was received, preventing the LMV3
from starting up. See diagnostic code 0 for corrective actions.
Error
Code Diag. Code Description
Corrective Action
Note: Diagnostic codes are additive. If a diagnostic code appears that is not on this list, it is a combination of multiple diagnostic codes.