LAARS NeoTherm NTV (Sizes 150–850 MBTU/h) - Install and Operating Manual - Manual (Page 80)

Page 76 LAARS Heating Systems
Appendix B -
ERROR MESSAGES
This table includes a listing of the faults that might be generated by the controller, and displayed on the Operator
Interface. Some of these can be corrected by an installer changing a parameter, while other conditions are more
complicated, and will require a service technician.
The first column lists the code number that will appear at the beginning of the Lockout or Hold message. The second
column lists a short description of the condition. 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 L or H Procedure
1 Unconfigured safety data L 1. New device, complete device configuration and safety verification.
2. If fault repeats, replace module.
2. Waiting for safety
data verification L 1. Device in Configuration mode and safety parameters need
verification and a device needs reset to complete verification.
2. Configuration ended without verification, re enter configuration,
verify safety.
parameters and reset device to complete verification.
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) 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 flag L Internal fault
1. Reset module
2. If fault repeats, replace module.