Problem with a Hiyasu Inverter HOW-12LA

[Debonair Spain]

Hi Guys do you have any service manuals for the above system. The system´s timer lamp on the indoor unit is flashing and the outdoor board has a red LED constantly on.

Many thanks

[lawrence1]

Hi,
Hiyasu is made by Fujitsu if that helps.

[nike123]

What is Indoor unit full model #?
How many flashes has Timer limp. Check patern?

[Debonair Spain]

Hi Nike 123 the full indoor model number is HSW12-LA. There is no pattern to the flashes, they just flash constantly.

[nike123]

Hi Nike 123 the full indoor model number is HSW12-LA. There is no pattern to the flashes, they just flash constantly.

That is communication error.
You need to enter secondary level indication to see what unit is not communicating.
Check fuses in outdoor unit!

[ozairman]

Hi Nike 123 the full indoor model number is HSW12-LA. There is no pattern to the flashes, they just flash constantly.


That is communication error.
You need to enter secondary level indication to see what unit is not communicating.
Check fuses in outdoor unit!

Point the remote control towards the indoor unit and press the test run button whilst the error is flashing (timer light 1 second on/off) The pattern will change to rapid operation flashing and coded flash on the timer light.
2 or 3 flashes on the timer light = outdoor unit communication problem.
4 or 5 flashes on the timer light = Indoor communication problem.
Normally if it is an outdoor communication problem then the indoor unit disengages the power relay and the outdoor unit is de-energised.

[Debonair Spain]

Point the remote control towards the indoor unit and press the test run button whilst the error is flashing (timer light 1 second on/off) The pattern will change to rapid operation flashing and coded flash on the timer light.
2 or 3 flashes on the timer light = outdoor unit communication problem.
4 or 5 flashes on the timer light = Indoor communication problem.
Normally if it is an outdoor communication problem then the indoor unit disengages the power relay and the outdoor unit is de-energised.


Hi Ozairman, Nike 123 and Lawrence 1 i will be visiting the property Thursday / Friday and let you know.

[Debonair Spain]

Point the remote control towards the indoor unit and press the test run button whilst the error is flashing (timer light 1 second on/off) The pattern will change to rapid operation flashing and coded flash on the timer light.
2 or 3 flashes on the timer light = outdoor unit communication problem.
4 or 5 flashes on the timer light = Indoor communication problem.
Normally if it is an outdoor communication problem then the indoor unit disengages the power relay and the outdoor unit is de-energised.

Hi Ozairman or anyone with Hiyasu knowledge, do you have any service manuals that you could post here, so i could download and go through a process of elimination to reach the problem.

[ozairman]

Check your PM's :)