Gas valve diagnostic codes (see figure 44) – Sears 9MPD125L20B1 User Manual

Page 42

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Gas Valve Diagnostic Codes (See Figure 44)

OFF

Fleartbeat
1 Flash
2 Flashes

3 Flashes
in 5 minute delay mode,

4 Flashes
5 Flashes

6

Flashes + 1 Note 1

6

Flashes + 2 Notes 1,2

6

Flashes + 3 Notes 1,2

6

Flashes + 4 Notes 1,2

7 Flashes

= Control not powered

= Normal Operation (Standby or call for heat)
= Not used
= Pressure switch closed when should be open

= Pressure switch circuit was still sensed as open 30 seconds after the inducer was energized. System is

with inducer off. After 5-minute delay, a new ignition sequence will be initiated.

(Note: SV9541M On/Off switch in off position during a call for heat will generate this diagnostic code)

= Limit switch string open
= Flame sensed out of sequence - Flame signal still present.
= Soft Lockout -Maximum retry count exceeded (failed to light within 4 trials for ignition)
= Soft

Lockout -Maximum recycle count exceeded - Last failure was Flame Sense Lost During Run

= Soft

Lockout -Maximum recycle count exceeded - Last failure was Airflow Proving Circuit Opened

During Run

= Soft

Lockout -Maximum recycle count exceeded - Last failure was Limit Circuit Opened During Run

= Soft

Lockout Due to Limit Trips Taking Longer than 2 minutes to Reset; Auto Reset After 1 Flour if

Call for Fleat Still Present. Reset by Cycling Call for Fleat at Any Time.

NOTE 1: The

6

+ X designation indicates a combination of flash codes:

6

flashes shows the control is in soft lockout, followed by X flashes

to indicate the reason the control went into soft lockout. When the

6

+ X code is flashing, the SV9541 will attempt a new ignition sequence

after a five minute delay period, if the call for heat is still present. Reset of the thermostat will initiate a new ignition sequence immediately.

NOTE 2: Any combination of 5 abnormal' events during a single call for heat will result in soft lockout. An abnormal' event is a Flame
Sense Failure During Run, Airflow Proving Circuit Open During Run, or Limit Circuit Open During Run. The flash code will indicate which

was the last abnormal' event that put the system into the soft lockout state based on the table above.

440 01 1020 04

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