Question about AmcorAire UCHW-H12AF2 Split System Air Conditioner

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Can I get a circuit board for the outdoor unit? S# AOSAWSAMS181HX

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Yes ring up the company and order a new board. if its under warranty you can get it for free . give serial and model number

Posted on Nov 09, 2010


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Fujitsu astra07jec. 3 flashes on timer I have changed batteries in remote. Turned off and on at outdoor unit and still not working Indoor unit still blows air but not cool Please help

'Serial signal error' that means the outdoor unit is not talking to the indoor unit. Usually caused by bugs, geckos, cockroaches, etc. getting on the inverter board and frying it. You could try turning off the isolator (switch next to the outdoor unit) or the circuit breaker in the switchboard controlling that particular circuit for 10 minutes then back on. Sometimes that clears the error if you're lucky... but not normally. You will probably have to get a replacement controller. Get a tech to diagnose. The boards are pretty expensive but normally can be repaired by the Module Repair Service in Melbourne far cheaper than a new board.

Apr 16, 2018 | Fujitsu Heating & Cooling

1 Answer

My Fujitsu ASTA30JCC has the timer light ( green) flashing twice every 15 seconds and is not cooling

Serial signal error. This means that the outdoor unit is not talking to the indoor unit. There are 5 circuit boards in the outdoor unit and the faulty board could be any one or combination of these. Usually it's the controller board but you will need a tech to diagnose.

Nov 23, 2017 | Fujitsu Heating & Cooling

1 Answer

When we put on the air conditioner it shows F1 or ERROR on the window. What is the problem?

Hi Charity, F1 is a communication fault, I hope this helps......... CHEERS..
1?Check whether the connection of the outdoor unit and indoor unit is one to one, otherwise connect the L, N and communication line of the indoor unit and outdoor unit one to one.
2?Measure whether the voltage between the zero line and the communication line is 18V-30AC half-wave signal, check whether the communication circuit on the indoor and outdoor electric control board has been damaged, otherwise replace it.
3?Check whether the LED on the outdoor power board has been on, otherwise replace the electric control board.
4?Check whether the unit is abnormal caused by the external interference, if it is, then find the interfering source, and removes it.

May 10, 2016 | grunaire GSI241HXB / GSU241HXB 24,000 BTU...

1 Answer


Outdoor controller circuit board sounds faulty. This error means that the indoor and outdoor units cannot communicate. Replace the outdoor controller in this case. Check if there are more than one outdoor PCB as others can be damaged as well.

Jul 25, 2014 | Fujitsu HALCYON AOU24CL1 Mini Split...

1 Answer

Fujitsu ASY12RSE-W. Unit not working at all. Timer lamp blinking & operation lamp flashing twice

It's showing an error code for the outdoor unit no communication from the outdoor circuit board.

Jul 30, 2013 | Fujitsu 24C1 Air Conditioner

1 Answer

Error code "CA10"

Hi how are you this is jack .....( my personal ID.

Laser optical unit related service call
[CA10] Polygonal motor abnormality
Is the polygonal motor rotating?
NO 1. Check if the connector CN352 on the LGC board is disconnected.
2. Check if the harness is open-circuited or the connector pin is disconnected.
3. Check if the conductor pattern on the LGC board is short- or open-circuited.
4. Replace the laser optical unit.
5. Replace the LGC board.
Is the printed image distorted?
YES 1. Check if the connector CN352 on the LGC board is almost disconnected.
2. Check if the harness is almost open-circuited or the connector pin is almost
3. Check if the conductor pattern on the LGC board is short- or open-circuited.
4. Check if the laser unit cooling fan is stopped.
5. Check if the suction area of laser unit cooling fan is plugged up.
6. Replace the laser optical unit.
7. Replace the LGC board.
Best Regards,

Aug 05, 2010 | Toshiba E-Studio 3511 Color Copier

1 Answer

AC unit Amcoraire AOS241HX @ startup i have power to the L1, L2 power inlet terminals to the outdoor unit but no power to the lines going up to the indoor unit. What can I do to correct problem?

these should be seperate circuits so lets forget the condensing unit for a moment. It should not come on because it gets the control voltage for the contactor from the indoor unit. Check your circuit board for a 3 or 5 amp fuse and make sure it hasnt blown. If it has you will get nothing past the board. If that isnt the case, you will have to start checking for supply voltage from the panel to the disconnect at your furnace, disconnect to board(transformer may also be bad) the blower motor. transformer, and circuit board are the only components indoor that effect the outdoor unit.

Jan 08, 2010 | AmcorAire UCHW-H24AF2 Split System Air...

1 Answer

Indoor unit does not function -outdoor unit works

These units have circuit boards inside that have lights on them. These lights come on and tell you what the problem is. I have had 4 units do the same thing that yours is doing. The result has been that the compressor has gone bad. You have to get access to the control board to see the lights. There will either be one inside the inside unit or one inside the outside unit depending on exact manufacturer date.
Good luck and hope this helps.

Aug 22, 2009 | Heating & Cooling

1 Answer

Does not heat - compressor switches on/off repeatedly

check outdoor fan if running. the outdoor coil will freeze up on heat cycle. or outdoor board if there is one is could be reversing valve as well

May 18, 2009 | Heating & Cooling

1 Answer

I got an indoor unit working on fan mode only...the compressor on the outdoor unit is not kicking in...even though there is power to it..iv checked the fuses on the pc board outdoors...any suggestions...

There are two different power voltages to these outdoor units. 24 volts in the control circuit and 230-240 volts for the compressor to operate. Checking the fuses as good does not insure that power is to the unit. You need to check the power with a volt meter.

Jul 21, 2008 | Hitachi Heating & Cooling

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