CB FALCON
109 750-265
101-104 RESERVED
Flame Operation Faults
105 Flame detected out of sequence 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.
H or L
106 Flame lost in MFEP 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.
L
107 Flame lost early in run L
108 Flame lost in run L
109 Ignition failed L
110 Ignition failure occurred Hold time of recycle and hold option. Will not be a lockout
fault. Hold Only.
H
111 Flame current lower than WEAK threshold Internal hardware test. Not a lockout, H
112 Pilot test flame timeout Interrupted Pilot or DSI application and flame lost when
system in “test” mode.
1. Reset the module to restart.
L
113 Flame circuit timeout Flame sensed during Initiate or off cycle, hold 240
seconds, if present after 240 seconds, lockout.
L
114-121 RESERVED
Rate Proving Faults
122 Lightoff rate proving failed 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.
L
123 Purge rate proving failed L
124 High fire switch OFF 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.
H
125 High fire switch stuck ON H
126 Low fire switch OFF 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.
H
127 Low fire switch stuck ON H or L
128 Fan speed failed during prepurge 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.
H or L
129 Fan speed failed during preignition H or L
130 Fan speed failed during ignition H or L
131 Fan movement detected during standby H
132 Fan speed failed during run H
133-135 RESERVED
Start Check Faults
Table 49. Falcon Lockout and Hold Codes. (Continued)
Code Description Recommended Troubleshooting of Lockout Codes NOTE
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