Model reference

Lennox S9V2C080U5PSAA

Furnace

2 documents23 error codes4 service modes

Available documentation

Service Manual

Service Facts88 pg
Covers this model

Tech Sheet

S9V2 Performance Data60 pg
Covers this model

MyPros+ Max

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M+

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E01 on my Lennox S9V2C080U5PSAA

M+

Loss of the IRQ or other internal

From Service Manual 431752, p.44:

1.Access service mode to confirm the active fault code and read stored error history.

2.Measure control board supply voltage at test points. Expected: 12 VDC and 5 VDC.

3.Inspect all connectors on the main control for corrosion or backed-out pins.

Part WPW10804018

Electronic control board

Error codes (23)

CodeMeaning

E01Loss of the IRQ or other internal failure.E04Open thermal limit, rollout switch, or reverse airflow switch.E05Flame detected when it should not be present.E08Flame current is low (less than 0.5 micro-amp DC) but still strong enough to…E09Open inducer limit switch or open condensate pressure switch.E11IFC has detected internal gas valve relay failure, or 24 VAC sensed at 2nd…E12Open fuse (onboard 5 amp fuse is open or missing).E13Blower HP/OEM ID mismatch E14No Personality Module installed and local copy is bad/corrupted.E15Both Unit Data File in PM and local Unit Data File are corrupt.E17Blower motor no communication response E18Blower communication failure on the IFC control E2.1Retry exceeded E2.2Recycles exceeded E2.31st stage gas valve not energized when it should be.E3.1Shorted pressure switch, 1st stage (pressure switch is closed when it should be…E3.2Open pressure switch, 1st stage (pressure switch is open when it should be…E3.3Shorted pressure switch, 2nd stage (pressure switch is closed when it should be…E3.4Open pressure switch, 2nd stage (pressure switch is open when it should be…E6.1Voltage reversed polarity on incoming high voltage wiring.E6.2Bad grounding E6.3Igniter relay fails (stuck closed) or igniter circuit is open/shorted.E7.11st stage gas valve (MVL) is energized when it should be off.

Service modes (4)

Clear Last 6 Faults1
IFC Menu Setup1
Reset Factory Defaults1
View Last 6 Faults1

Full entry steps, exit procedures, and test sequences are available in Max.

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