LAARS NeoTherm NTV1000 - Install and Operating Manual - Manual (Page 107)

NeoTherm Boilers and Water Heaters Page 103
Code Description L or
H
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.