LAARS NeoTherm NTV (Sizes 150–285 MBTU/h) - Service Manual - Manual (Page 100)

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Service Manual NeoTherm 80 - NeoTherm 285
Code Description L or H Procedure
159 Main valve off L 1. Check the main valve terminal wiring and correct any
errors. Be sure the On/Off switch on the bottom of the
valve is On. See Fig. B11-9
2. Reset and sequence the module. If fault persists,
replace the module.
160 Ignition on L 1. Check ignition terminal wiring and correct any errors.
2. Reset and sequence the module. If fault persists,
replace the module.
161 Ignition off L 1. Check ignition terminal wiring and correct any errors.
2. Reset and sequence the module. If fault persists,
replace the module.
164 Block intake on L 1. Check wiring and correct any errors.
2. Inspect the block intake switch to make sure it is
working correctly.
3. Reset and sequence the module.
4. During standby and purge, measure the voltage
across the switch. Supply voltage should be present.
If not, the block intake switch is defective and needs
replacing.
5. If the fault persists, replace the relay module.
165 Block intake off L 1. Check wiring and correct any errors.
2. Inspect the block intake switch to make sure it is
working correctly.
3. Reset and sequence the module.
4. During standby and purge, measure the voltage
across the switch. Supply voltage should be present.
If not, the block intake switch is defective and needs
replacing.
5. If the fault persists, replace the relay module.
172 Main relay feedback incorrect L Internal fault.
1. Reset module.
2. If fault repeats, replace module.
174 Safety relay feedback incorrect L Internal Fault.
1. Reset module.
2. If fault repeats, replace module.
175 Safety relay open L Internal fault.
1. Reset module.
2. If fault repeats, replace module.
176 Main relay on at safe start check L Internal fault.
1. Reset Module.
2. If fault repeats, replace module.
Appendix 1 - Error Codes (continued)
App1
cont.