CleaverBrooks ProFire Q Series, Installation Operation & Maintenance

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750-437
Q Series Full Modulation
6-9
Troubleshooting
22
OFF S
Any # Safety loop / burner flange
A safety loop / burner flange fault occurred. Check all of the switches wired into the safety
loop (between terminals X3-04.1 and X3-04.2). This also includes the burner flange circuit
(between terminals X3-03.1 and X3-
03.2). One of the switches must have opened, causing the fault. Fix the condition that
caused the switch to open and reset the fault.
Diagnostic code 1 - A call for heat was received, but the LMV3 will not start up due to a
safety loop / burner flange fault.
Diagnostic codes 3 and larger - A call for heat was received, but the LMV3 will not start up
due to a safety loop / burner flange fault. Other inputs besides the safety loop and burner
flange inputs are in the wrong state as well. The diagnostic code calls out what other inputs
are in the wrong state.
0 Safety loop / burner flange open
1
Safety loop / burner flange open /
prevention of startup
3
Safety loop / burner flange open,
extraneous light - start prevention
5
Safety loop / burner flange open, air
pressure - start prevention
7
Safety loop / burner flange open,
extraneous light, air pressure - start
prevention
17
Safety loop / burner flange open,
combustion pressure - start prevention
19
Safety loop / burner flange open,
extraneous light, combustion pressure -
start prevention
21
Safety loop / burner flange open, air
pressure, combustion pressure - start
prevention
23
Safety loop / burner flange open,
extraneous light, air pressure, combustion
pressure - start prevention
65
Safety loop / burner flange open, POC -
start prevention
67
Safety loop / burner flange open,
extraneous light, POC - start prevention
69
Safety loop / burner flange open, air
pressure, POC - start prevention
71
Safety loop / burner flange open,
extraneous light, air pressure, POC - start
prevention
81
Safety loop / burner flange open,
combustion pressure, POC - start
prevention
83
Safety loop / burner flange open,
extraneous light, combustion pressure,
POC - start prevention
85
Safety loop / burner flange open, air
pressure, combustion pressure, POC -
start prevention
87
Safety loop / burner flange open,
extraneous light, air pressure, combustion
pressure, POC - start prevention
23
Any #
Gas pressure switch-min (Pmin) / heavy
oil direct start
A low gas pressure or heavy oil direct start fault occurred. See diagnostic codes for more
information.
0 No minimum gas pressure
The low gas pressure switch (input X5-01.2) opened, causing a fault. Check gas supply
and open any manual shutoff valves. Check the setpoint and wiring of the low gas pressure
switch. Check the setting of parameter 285/385.
1 Gas shortage - start prevention
The low gas pressure switch was not made by the end of phase 38, preventing the startup
of the LMV3. See diagnostic code 0 for more corrective actions.
2 Heavy oil direct start
When firing heavy oil, the heavy oil direct start input (X9-04.2) was de-energized, causing
the fault. Check the setting of parameter 286, and verify the wiring of the heavy oil direct
start is correct.
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.