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.
Summary of Contents for NTV1000
Page 2: ......
Page 35: ...NeoTherm Boilers and Water Heaters Page 31 Fig 20 Ladder Diagram...
Page 36: ...LAARS Heating Systems Page 32 Fig 21 Wiring Diagram...
Page 37: ...NeoTherm Boilers and Water Heaters Page 33...
Page 51: ...NeoTherm Boilers and Water Heaters Page 47 Fig 52 Connection Terminals...
Page 130: ...LAARS Heating Systems Page 126 Fig 140 Machine Frame and Rear Panel 13 3 PARTS ILLUSTRATIONS...
Page 131: ...NeoTherm Boilers and Water Heaters Page 127 Fig 141 Front Panel and Covers...
Page 132: ...LAARS Heating Systems Page 128 Fig 142 Burners and Combustion Chambers...
Page 134: ...LAARS Heating Systems Page 130 Fig 145 Electronic Components...
Page 135: ...NeoTherm Boilers and Water Heaters Page 131 Fig 146 Condensate Trap Fig 147 Control Bezel...
Page 136: ...LAARS Heating Systems Page 132 Fig 148 Flow Switch...
Page 137: ...NeoTherm Boilers and Water Heaters Page 133 This page intentionally left blank...