Laars NTV, Installation And Operation Instructions Manual

Page: 66 / 92

Page 62
LAARS Heating Systems
11.2 Troubleshooting Table
This table includes a listing of the fault codes that may be displayed. Some of these can be corrected by
changing a parameter, while other conditions are more complicated, and will require a service technician.
The fi rst column lists the code number that will appear at the beginning of the Lockout or Hold message in
the orange bar at the bottom of the screen. The second column lists the text as it will appear on the Touch
Screen. The third column shows whether the condition will cause a Hold, or Lockout, or both. The fourth
column lists some suggestions for corrective action.
Code Description Lockout
or Hold
Procedure
1 Unconfi gured
safety data
L 1. New device, complete device confi guration and safety verifi cation.
2. If fault repeats, replace module
2 Waiting for
safety
data verifi cation
L 1. Device in Confi guration mode and safety parameters need verifi cation
and a device needs reset to complete verifi cation.
2. Confi guration ended without verifi cation, re enter confi guration, verify
safety parameters and reset device to complete verifi cation.
3. If fault repeats, replace module.
3 Internal fault:
Hardware fault H Internal fault
1. Reset module
2. If fault repeats, replace module.
4 Internal fault:
Safety Relay key
feedback error
H Internal fault
1. Reset module
2. If fault repeats, replace module.
5 Internal fault:
Unstable power
(DC DC) output
H Internal fault
1. Reset module
2. If fault repeats, replace module.
6 Internal fault:
Invalid
processor clock
H Internal fault
1. Reset module
2. If fault repeats, replace module.
7 Internal fault:
Safety relay
drive error
H Internal fault
1. Reset module
2. If fault repeats, replace module.
8 Internal fault:
Zero crossing
not detected
H Internal fault
1. Reset module
2. If fault repeats, replace module.
9 Internal fault:
Flame bias out
of range
H Internal fault
1. Reset module
2. If fault repeats, replace module.
10 Internal fault:
Invalid burner
control state
L Internal fault
1. Reset module
2. If fault repeats, replace module.
11 Internal fault:
Invalid burner
control state fl ag
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.