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.