20 Most Recent Honeywell ER150B Air Conditioner Questions & Answers

It sounds like you have a bad capacitor to the compressor. The humming noise is the compressor not starting up but is trying. It is either the capacitor or the compressor form your description. If you had a lightning storm or power surge about the time this happened it is most likely a bad capacitor. You can have the capacitor tested to see. Disconnect power before working on unit!

Honeywell ER150B... | Answered on Sep 06, 2017

This is because your home is more than 2 degress colder than you thermostat setting. Your heater is probaly broken.

Honeywell ER150B... | Answered on Dec 12, 2014

does it have hold then a number?? hold means that you want to hold that temp

Honeywell ER150B... | Answered on Oct 31, 2014

Hitachi DC Inverter Scroll Compressor have a startup problem. when i start the unit the compressor start a voice of " Tak, Tak , Tak rasie and after 30 Second the compressor trip, after few minutes the compressor again try to start and again Tak, Tak, raise and compressor trip. please somebody help me about this issue.

Honeywell ER150B... | Answered on Aug 25, 2014

your compressor is not running for some reason setting thermotat to 65 does not make this unit cool any faster

Honeywell ER150B... | Answered on Jul 06, 2014

Sounds as if the compressor has gone bad. The blowing of hot air and then the fuse blowing lets you know the compressor is pulling a lot of amps causing the fuse to blow and no cold air could mean the compressor is locked up and therefore you need a new compressor.


Honeywell ER150B... | Answered on May 14, 2014

probably low on freon. i assume compressor is running?

Honeywell ER150B... | Answered on Jan 25, 2014

Keep heating mode and temp setting at minimum 3 to 4 degree C* between room and required temp.

If still not working, replace the heating sensor.


Honeywell ER150B... | Answered on Nov 16, 2013

Check fan/limit control on older unit. newer unit check limit switch

Honeywell ER150B... | Answered on Nov 13, 2013

Hi, if the button has tripped, this is normally due to a problem, as this is a safety. But it may also be that the button its self is faulty if the unit is running properly. You must make sure you have no other problems going on such as high head pressure in system by washing out the condenser coil, checking motors, looking over the electric connections for any signs of burned spots ect. You can just simply take the wiring at the reset button and bypass it to run, but if you have a problem you are unaware of, this will cause a problem. What I would do is write down your model and serial numbers, kill power to unit...., remove this reset and take it to any retail appliance parts house to get one that will take its place. Just about any kind will work if the voltage is correct and amperage, even if it will not fit the hole or not. You can mount it any where inside out of the weather, just make sure you draw a diagram when removing it so you will remember how it goes back. If the new one trips right away, you indeed have a problem in the unit and will need to find it. You can do this by process of elimination to see when it holds when you disconnect a componant. Please rate me on my help to you, and I will help you until the problem is solved.
A/C, & Heating Contractor

Honeywell ER150B... | Answered on Aug 28, 2011

Sounds like you have a problem with the indoor blower inside that cab. hope this helps.

Honeywell ER150B... | Answered on Aug 13, 2011

Myself download and checked. Go with:



Honeywell ER150B... | Answered on Jan 06, 2011

i would ask around to friends and family first to see if they have had a good experience with someone. Usually the one that advertises the most is not the honest company..

Honeywell ER150B... | Answered on Aug 20, 2010


Here is a tip about troubleshooting your air conditioner...
There are many things that can cause your air conditioner not to cool…

Air Conditioner Trouble -Review the Possibilities


Honeywell ER150B... | Answered on Aug 19, 2010

You have it right. The number you set is the temperature it will give you.
Higher number, Warmer. Lower number, cooler.
Good Luck,

Honeywell ER150B... | Answered on Aug 14, 2010

you should call honeywell , give them model and serial number and they should be able to help you . they would help you with tour manual .

Honeywell ER150B... | Answered on Aug 11, 2010

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