CleaverBrooks CFC User Manual

750-265 104
136 Interrupted Airflow Switch failed to close 1. Check wiring and correct any possible wiring errors.
2. Check Interrupted Airflow switch(es) to assure proper
function.
3. Verify voltage through the airflow switch to the IAS input
with a voltmeter.
4. If steps 1-3 are correct and the fault persists, replace the
module.
137 ILK failed to close 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.
138-148 RESERVED
149 Flame detected
150 High fire switch 1. Check wiring and correct any potential wiring errors.
2. Check High Fire Switch to assure proper function.
3. Manually drive the motor to the High Fire position and
adjust the HF switch while in this position and verify voltage
through the switch to the HFS input with a voltmeter.
4. If steps 1-3 are correct and the fault persists, replace the
module.
151 High fire switch ON 1. Check wiring and correct any potential wiring errors.
2. Check High Fire Switch to assure proper function.
3. Manually drive the motor to the High Fire position and
adjust the HF switch while in this position and verify voltage
through the switch to the HFS input with a voltmeter.
4. If steps 1-3 are correct and the fault persists, replace the
module.
152 Combustion pressure ON
153 Standby purge fan switch
154 Hold purge fan switch
155 Combustion pressure/flame
156 Combustion pressure ON
157 High fire switch 1. Check wiring and correct any potential wiring errors.
2. Check High Fire Switch to assure proper function.
3. Manually drive the motor to the High Fire position and
adjust the HF switch while in this position and verify voltage
through the switch to the HFS input with a voltmeter.
4. If steps 1-3 are correct and the fault persists, replace the
module.
158 Flame detected 1. Check that flame is not present in the combustion
chamber. Correct any errors.
2. Make sure that the flame detector is wired to the correct
terminal.
3. Make sure the F & G wires are protected from stray noise
pickup.
4. Reset and sequence the module, if code reappears,
replace the flame detector.
5. Reset and sequence the module, if code reappears,
replace the module.
159 Main flame ignition 1. Inspect the main fuel valve (s) and connection (s).
2. Make sure that the fuel pressure is high enough to supply
fuel to the combustion chamber.
3. Make sure the flame detector is positioned to obtain the
required flame signal strength.
4. Reset the module, if fault persists, replace the module.
Table 45. Fault Code and Troubleshooting. (Continued)
Code Description Recommended Troubleshooting of Lockout Codes

CleaverBrooks CFC Specifications

General

Brand	CleaverBrooks
Model	CFC
Category	Boiler
Language	English