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KevinWhiteJA, Home Appliance Technician
Category: Appliance
Satisfied Customers: 6428
Experience:  18+ years experience as Appliance Tech.
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Turning on the units after a 2 month spell ,they are showing

Customer Question

Turning on the units after a 2 month spell ,they are showing fault E7.
JA: Who makes your appliance?
Customer: Turning on the units after a 2 month spell, there is no warm air and their showing a fault ,E7!
JA: How long has this been going on? What have you tried so far?
Customer: 5 days, switched off the power ,waited, then turned it back on, cold air is fine , but as soon as I try warm air, the fault reappears.
JA: Anything else we should know to help you best?
Customer: No other explanation, the 3rd unit we have is fine
Submitted: 14 days ago.
Category: Appliance
Expert:  KevinWhiteJA replied 14 days ago.

Good afternoon,

You have reached Justanswer UK, an independent paid question and answer platform that matches experts in various skills to customers.

My name is ***** ***** I will assist you today.

I am sorry to hear you are having trouble with your appliance.

I understand how frustrating that can be.

Please provide its make and complete model number.

Customer: replied 14 days ago.
Haier AS12GB3HRA
We’re in Portugal
Expert:  KevinWhiteJA replied 14 days ago.

Thank you.

E7 fault in your Haier is indoor unit- outdoor unit signal transmission error and/or Faulty PCB.

It seems the outdoor PCB needs cleaning, you will have to get them serviced so can you use them again.

Please let me know if you need me to clarify anything or if you have any additional questions-I am happy to help!

I hope you enjoyed your experience with Justanswer UK today.

Have a wonderful day.

Thank you.

Customer: replied 14 days ago.
Can they be serviced, the Engineer, tells me new boards are needed even though he has not dismantled the Unit!Is this correct?
Expert:  KevinWhiteJA replied 14 days ago.

You may try to service the outdoor units first, if that works then no need to replace the boards.

However, if the issue is still there then yes PCB will need replacement.

Customer: replied 14 days ago.
How is a service carried out?As they are electrical units, what expertise is needed?Is it just damp in which case , will something such as WD40, or some such thing work?
Expert:  KevinWhiteJA replied 14 days ago.

The units have to be cleaned, you may check various videos available online on how these outdoor and indoor units are cleaned.

If there is anything else I can help you with, please let me know.


Customer: replied 10 days ago.
Please advise the serial number, type etc, of my unit?Ive returned home and need this for a local tradesman to investigate.Thanks for your input.
Expert:  KevinWhiteJA replied 10 days ago.

You are very welcome.

You have already provided the details earlier, here are they again:

Haier AS12GB3HRA

If there is anything else I can help you with, please let me know. Cheers