LAARS NeoTherm NTV1000 - Install and Operating Manual - Manual (Page 115)

NeoTherm Boilers and Water Heaters Page 111
Code Description L or
H
Procedure
159 Main valve OFF L 1. Check Main Valve terminal wiring and correct
any errors.
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.