LAARS MagnaTherm MGV - Installation, Operation and Maintenance Instructions - Manual (Page 74)

LAARS Heating Systems Page 70
Code Description Lockout
or Hold
Procedure
11 Internal fault:
Invalid burner control state flag L Internal fault
1. Reset module
2. If fault repeats, replace module.
12 Internal fault:
Safety relay drive cap short
H Internal fault
1. Reset module
2. If fault repeats, replace module.
13 Internal fault:
PII (Pre-Ignition Interlock) shorted to
ILK (Interlock)
H or L Internal fault
1. Reset module
2. If fault repeats, replace module.
15 Internal fault:
Safety relay test failed due to feedback
ON
L Internal fault
1. Reset module
2. If fault repeats, replace module.
16 Internal fault:
Safety relay test failed due to safety
relay OFF
L Internal fault
1. Reset module
2. If fault repeats, replace module.
17 Internal fault:
Safety relay test failed due to safety
relay not OFF
L Internal fault
1. Reset module
2. If fault repeats, replace module.
18 Internal fault:
Safety relay test failed due to feedback
not ON
L Internal fault
1. Reset module
2. If fault repeats, replace module.
19 Internal fault:
Safety RAM write
L Internal fault
1. Reset module
2. If fault repeats, replace module.
20 Internal fault:
Internal fault: Flame ripple and overflow H Internal fault
1. Reset module
2. If fault repeats, replace module.
21 Internal fault:
Flame number of sample mismatch
H Internal fault
1. Reset module
2. If fault repeats, replace module.
22 Internal fault:
Flame bias out of range
H Internal fault
1. Reset module
2. If fault repeats, replace module.
23 Internal fault:
Bias changed since heating cycle starts
H Internal fault
1. Reset module
2. If fault repeats, replace module.
24 Internal fault:
Spark voltage stuck low or high
H Internal fault
1. Reset module
2. If fault repeats, replace module.
25 Internal fault:
Spark voltage changed too much during
flame sensing time
H Internal fault
1. Reset module
2. If fault repeats, replace module.