Laars MagnaTherm MGH1600, Инструкции по установке и эксплуатации для

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MagnaTherm Boilers and Water Heaters
Page 93
122 Lightoff rate proving failed L 1. Check wiring and correct any potential wiring
errors.
2. Check VFD’s (Variable-speed Fan Drive) ability
to change speeds.
3. Change the VFD
4. If the fault persists, replace the module.
123 Purge rate proving failed L 1. Check wiring and correct any potential wiring
errors.
2. Check VFD’s (Variable-speed Fan Drive) ability
to change speeds.
3. Change the VFD
4. If the fault persists, replace the module.
128 Fan speed failed during prepurge H or L 1. Check wiring and correct any potential wiring
errors.
2. Check the VFDs (Variable-speed Fan Drive)
ability to change speeds.
3. Change the VFD
4. If the fault persists, replace the module.
129 Fan speed failed during preignition H or L 1. Check wiring and correct any potential wiring
errors.
2. Check the VFDs (Variable-speed Fan Drive)
ability to change speeds.
3. Change the VFD
4. If the fault persists, replace the module.
130 Fan speed failed during ignition H or L 1. Check wiring and correct any potential wiring
errors.
2. Check the VFDs (Variable-speed Fan Drive)
ability to change speeds.
3. Change the VFD
4. If the fault persists, replace the module.
131 Fan movement detected during standby H 1. Check wiring and correct any potential wiring
errors.
2. Check the VFDs (Variable-speed Fan Drive)
ability to change speeds.
3. Change the VFD
4. If the fault persists, replace the module.
132 Fan speed failed during run H 1. Check wiring and correct any potential wiring
errors.
2. Check the VFDs (Variable-speed Fan Drive)
ability to change speeds.
3. Change the VFD
4. If the fault persists, replace the module.
137 ILK (Interlock) failed to close H 1. Check wiring and correct any possible shorts.
2. Check Interlock (ILK) switches to assure proper
function.
3. Verify voltage through the interlock string to the
interlock input with a voltmeter.
4. If steps 1-3 are correct and the fault persists,
replace the module.