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S9240F2051 MODULATING INTEGRATED FURNACE CONTROL
Table 12. LED Error Codes Displayed By The S9240F2051 IFC. (Continued)
Error/Fault Condition
Device Communications Problem
Line voltage low
Line voltage high
Zero crossing not detected or frequency out of
range
Low 24 volts
Unresponsive Device
Active Subnet Controller Missing for > 180sec
Hardware failure
Micro inter-communication failure
Non-Volatile data corruption
Circulator communication failed
Gas valve miswire
Low pressure switch failed (stuck) Open
Low pressure switch failed (stuck) Closed
High pressure switch failed (stuck) Open
High pressure switch failed (stuck) Closed
Low pressure switch opened in run or Trial for
Ignition
Flame sense out of sequence while flame still
present
Limit switch circuit open
Discharge air temperature too high
Indoor blower over temperature
Indoor and Outdoor Unit capacity mismatch
Global network connection
Relay Y1 failure
Relay Y2 failure
O input is sensed low with non-comm. outdoor
unit and no DFM
69-2807—01
Code
(in addition to displaying error code)
105 Retry until a message is successfully sent or received.
110 Resume normal operation after fault recovers.
113 Resume normal operation after fault recovers.
114 Resume normal operation after fault recovers.
115 Resume normal operation after fault recovers.
120 Resume normal operation after fault recovers.
124 Terminate all services and wait for subnet controller
message.
Resume normal operation 300 seconds after fault recovers.
b
125
Resume normal operation 300 seconds after fault recovers.
b
126
131 No operation
201 Resume normal operation after fault recovers.
204 Resume normal operation after fault recovers.
223 If longer than 150 seconds, start pressure switch calibration.
224 Resume normal operation after fault removed.
225 Increase inducer RPM every few seconds. If upper limit
reached, start pressure switch calibration.
226 Wait for it to open, then start calibration.
227 Increment recycle/retry. Go to Soft Lockout if > maximum.
241 Resume normal operation after fault recovered.
If flame loss detected, then go to Soft Lockout (see error
code 275).
250 Wait for Limit switch circuit to close. If closed in 3 minutes,
resume operation, else enter Soft Lockout after close.
252
295 None
313 None
331 Link relay in local mode until new request for link from subnet
controller.
347 None
348 None
349 Y1 and Y2 outputs inactive.
28
IFC Error Handling
Result
Wait For
Recovery
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