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Date: 8-4-2010
Revision: 0
Form: 2396
43
Code Description Recommended Troubleshooting of Lockout Codes Code
2. Replace the stack sensor.
3. If previous steps are correct and fault persists, replace the
module
96 Outdoor sensor
fault
1. Check wiring and correct any possible errors.
2. Replace the outdoor sensor.
3. If previous steps are correct and fault persists, replace the
module.
H
97 Internal Fault: A2D
mismatch.
L
98 Internal Fault:
Exceeded VSNSR
voltage tolerance
L
99 Internal Fault:
Exceeded 28V
voltage tolerance
Internal Fault.
1. Reset Module.
2. If fault repeats, replace module.
L
100 Pressure Sensor
Fault
1. Verify the Pressure Sensor is a 4-20ma source.
2. Check wiring and correct any possible errors.
3. Test Pressure Sensor for correct operation.
4. Replace the Pressure sensor.
5. If previous steps are correct and fault persists, replace the
module.
H
101-
104
RESERVED
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 L
107 Flame lost early in
run
L
108 Flame lost in run L
109 Ignition failed
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 setting or flame rod position.
5. If steps 1 through 4 are correct and the fault persists, replace
the module.
L
110 Ignition failure
occurred
H
111 Flame current
lower than WEAK
threshold
Hold time of recycle and hold option. Will not be a lockout fault.
Hold Only. 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