Model reference

Denso OFFICEPRO12

Name: Denso OFFICEPRO12
Brand: Denso

Air Conditioner

1 document6 error codes6 service modes

Available documentation

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ALRM on my Denso OFFICEPRO12

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Unit stop signal detected from fire

From Service Manual 771691, p.23:

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

CodeMeaning

Change model settingWhile pressing UP (U) and DOWN (V) buttons, plug the power cord
Indication of model namePress ENTER and SET CLOCK buttons simultaneously for 5 seconds, or turn unit on.
Key lock modePress ENTER and SET CLOCK buttons simultaneously for 5 seconds
Service code displayPress ON/OFF and UP (U) buttons simultaneously for 3 seconds. Service codes are displayed
Show LCD and LED all on modePress HI/LO and UP (U) buttons simultaneously for 3 seconds
Show running hoursPress ON/OFF and DOWN (V) buttons simultaneously for 3 seconds

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

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