CleaverBrooks CFC-500 Operation, Service And Parts Manual page 233

Code Description
101-104 RESERVED
Flame Operation Faults
105 Flame detected out of sequence
106 Flame lost in MFEP
107 Flame lost early in run
108 Flame lost in run
109 Ignition failed
110 Ignition failure occurred
111 Flame current lower than WEAK threshold
112 Pilot test flame timeout
113 Flame circuit timeout
114-121 RESERVED
Rate Proving Faults
122 Lightoff rate proving failed
123 Purge rate proving failed
124 High fire switch OFF
125 High fire switch stuck ON
126 Low fire switch OFF
127 Low fire switch stuck ON
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
133-135 RESERVED
Start Check Faults
Table 49. Falcon Lockout and Hold Codes. (Continued)
Recommended Troubleshooting of Lockout Codes
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.
1. Check pilot valve (Main Valve for DSI) wiring and
operation - correct any errors.
2. Check the fuel supply.
3. Check fuel pressure and repeat turndown tests.
4. Check ignition transformer electrode, flame detector,
flame detector siting or flame rod position.
5. If steps 1 through 4 are correct and the fault persists,
replace the module.
Hold time of recycle and hold option. Will not be a lockout
fault. Hold Only.
Internal hardware test. Not a lockout,
Interrupted Pilot or DSI application and flame lost when
system in "test" mode.
1. Reset the module to restart.
Flame sensed during Initiate or off cycle, hold 240
seconds, if present after 240 seconds, lockout.
1. Check wiring and correct any potential wiring errors.
2. Check VFDs ability to change speeds.
3. Change the VFD
4. If the fault persists, replace the module.
1. Check wiring and correct any potential wiring errors.
2. Check High Fire Switch to assure proper function (not
welded or jumpered).
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.
1. Check wiring and correct any potential wiring errors.
2. Check Low Fire Switch to assure proper function (not
welded or jumpered).
3. Manually drive the motor to the High Fire position and
adjust the LF switch while in this position and verify voltage
through the switch to the LFS input with a voltmeter.
4. If steps 1-3 are correct and the fault persists, replace the
module.
1. Check wiring and correct any potential wiring errors.
2. Check VFDs ability to change speeds.
3. Change the VFD
4. If the fault persists, replace the module.
109
CB FALCON
NOTE
H or L
L
L
L
L
H
H
L
L
L
L
H
H
H
H or L
H or L
H or L
H or L
H
H
750-265