Fujitsu Heat Pump: Start a forced cooling test run from the indoor unit
Start a forced cooling test run from the indoor unit on a Fujitsu heat pump: Holding MANUAL AUTO on the indoor unit starts forced cooling when the remote is lost or the outdoor unit will not start on room temperature.
Applies to: Fujitsu ductless heat pumps: Fujitsu wall-mounted 7-15 (NA ASU/AOU type); Fujitsu ductless heat pumps: Fujitsu multi-zone outdoor 18/24 type (18 type 2-zone, 24 type 3-zone)
How to fix start a forced cooling test run from the indoor unit: step by step
- Keep MANUAL AUTO pressed longer than 10 seconds.
- Watch for the OPERATION and TIMER lamps flashing together.
- In the wall unit the heating test run follows about three minutes later when HEAT is chosen on the remote.
- Stop with the remote START/STOP key, or press MANUAL AUTO briefly.
If the unit shows an error code, look it up: Fujitsu Heat Pump codes
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; Fujitsu Outdoor unit 18-24 type (North American trilingual) installation P-N 9374747160.pdf - section 9 Pump down operation. Written in our own words as a summary; always check the original manual.
General guidance for qualified technicians. The manufacturer's installation and service manual and local codes always take priority. Aurora Star Tech is not affiliated with, endorsed by or sponsored by any equipment manufacturer; brand and model names are used only to identify equipment and belong to their owners.