20 Most Recent Fujitsu ASU12RLS2 Wall Mounted Indoor Unit Air Handler 12,000 BTU 1 Questions & Answers


Front grill is not closed properly... 2 clips on either side hold it in, however like in my situation the front clips are getting weak and we might have to hold in place with some tape for now until I find out how to replace the clips.... (Mini-splits can be such a pain for servicing)

Fujitsu... | Answered on Oct 05, 2020


Problem with room sensor. Room sensor fixed in the evaparator coil. Plz replace the sensor alone.

Fujitsu... | Answered on Nov 17, 2013


hardware erroe , check pcb for any brokage aur shorting in pcb

Fujitsu... | Answered on Oct 15, 2013


the light flashing indicates there is a problem. you can try reseting the system by turning the power supply off and back on again 30 sec later, if the same thing happens you need to count the number of light flashers and that relates to a fault code

Fujitsu Heating... | Answered on Jan 12, 2020


From the owners manual:
TEMP Buttons:
Sets the desired temperature.
In COOL or DRY mode, the temperature needs to be set lower than
the current room temperature. In HEAT mode, the temperature needs
to be set higher than the current room temperature.
Otherwise, corresponding operation mode may not start. Temperature setting range AUTO/COOL/DRY 18-30 °C HEAT 16-30 °C

Fujitsu Heating... | Answered on Oct 22, 2019


Lift the front cover as if you were going to clean the filters then look for a small button near the terminal cover on the right hand side. That is the manual on/off button.

Fujitsu Heating... | Answered on Oct 22, 2019


Press the 'Mode' button on the remote until the display shows COOL

Fujitsu Heating... | Answered on Oct 22, 2019


Most likely a faulty thermistor. The error code doesn't show that sequence in the table but in my experience, when the thermistor is way out of normal range (instead of open or short circuit), it will cause the air con to act like this. The trick is to find which one and for that you will need a multimeter to compare the resistance of each against the temp characteristics for that thermistor. The part is cheap but you may have to pay for a tech.

Fujitsu Heating... | Answered on Oct 22, 2019


Some evaporator blower units are electricaly interlocked with condensation pump. Besides the power to the pump, there would be two other wires, these two wires when open locks out the cooling, splice them together to bypass the interlock. In most cases though.

Fujitsu Heating... | Answered on Aug 16, 2019


Tell us what model you are working on. The 9k and 12k units often just run on a single 115 volt power line while the larger 15k and up capacity units run on 220 volts. For the indoor unit to turn on means it is still getting some power. My guess is you have only turned off one of the two breakers that feed the outdoor unit 220 volts. You really have not completely turned off the power. Your breaker should have a connected double throw breaker. If you do have a double connected breaker and they both are "off" I would suspect you have a failed breaker that is still feeding power to the outdoor unit. If you don't know, the indoor unit gets its power from the outdoor unit.

Fujitsu Heating... | Answered on Aug 10, 2019

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