Fujitsu · Heat pump

Wired remote test run Test run from the wired remote controller

Menu / mode display Fujitsu wall-mounted 7-15 (NA ASU/AOU type)

What the display is showing

With the optional wired remote controller, the test run is started by pressing the master control and fan control keys together for 2 seconds or more while the unit is stopped. The wired remote then shows its test run display. The START/STOP key ends it.

Applies to: Fujitsu ductless heat pumps: Fujitsu wall-mounted 7-15 (NA ASU/AOU type)

What to do

Stop the air conditioner.
Press the master control key and the fan control key together for 2 seconds or more.
Press START/STOP to end the test run.

Settings for these units

Operating range and service space · Fujitsu multi-zone outdoor 18/24 type

Other codes on the same units

A1 High discharge temperature
A3 High compressor temperature
A4 High pressure error
A5 Low pressure error
J2 Branch box error (flexible multi)
Custom code A/B/C/D Wireless remote custom code display
MANUAL AUTO 10 s Start test run / forced cooling from the indoor unit
OPERATION + TIMER lamps flash together Test run / forced cooling running

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Source: Fujitsu Wall-mounted 7-9-12-15 (North American trilingual, UTY-RNNUM remotes; e.g. ASU9-12-15 RLF1-RLS familie.pdf - section 12 Test run. Summarized in our own words; check the original manual for your model.

For licensed technicians. Gas, electrical and refrigerant work must be done by a qualified, licensed person. Shut off power and gas before servicing, never bypass a safety control, and follow the manufacturer’s manual for the exact model; it and local codes always take priority. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.