Bradford White Brute BNTH Installation And Operation Instructions Manual page 71

Brute
BOILERS AND VOLUME WATER HEATERS
109 Ignition failed
110 Ignition failure
occurred
111 Flame current
lower than weak
threshold
113 Flame circuit
timeout
119 Control
Interaction Fault
122 Lightoff rate
proving failed
123 Purge rate
proving failed
128 Fan speed failed
during prepurge
129 Fan speed
failed during
preignition
130 Fan speed failed
during ignition
131 Fan movement
detected during
standby
132 Fan speed failed
during run
137 ILK (Interlock)
failed to close
L 1. Check main valve wiring and operation - correct any errors.
2. Check the fuel supply.
3. Check fuel pressure and repeat turndown tests.
4. Check ignition transformer electrode, fl ame detector, fl ame detector
siting or fl ame rod position.
5. If steps 1 through 4 are correct and the fault persists, replace the module.
H Hold time of recycle and hold option. Will not be a lockout fault. Hold
Only. Internal hardware test. Not a lockout.
H Hold time of recycle and hold option. Will not be a lockout fault. Hold
Only. Internal hardware test. Not a lockout.
L Flame sensed during Initiate or off cycle, hold 240 seconds, if present
after 240 seconds, system will lockout.
H Flap valve identifi cations confi gured incorrectly.
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.
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.
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.
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.
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.
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.
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.
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.
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