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York 4 ton Heat pump model EDFH which ices
I have a 13 years old York 4 ton Heat pump model EDFH which ices when the temperature gets below 32F.
The problem with this pump started when the card became defective about three months ago when the temperature was in the 70's F. I called a tech and they replace the card with a universal card (I guess a clone) and the machine was then working fine as long as it was not too cold outside. Now we are into November and one morning the system was on emergency heat when I got up in the morning. It was around 32F outside so Went and looked at the pump and there was about 1" of ice around the whole unit. So I put the pump on emergency until the ice melted and then turned it back on to normal heat. It worked fine until the temperature dropped again and overnite the unit froze again. I called the tech and after checking the sensor and replacing it he said if that did not solve the problem he would install a timer on the new card and that should do it. Is he right? Is my heat pump too old? I had another one previously that ran trouble free for 20 years. We will be leaving for Florida for the winter and I am concerned that this problem may cost us a lot of grievance and money (emergency heat for 6 months must cost a bundle in Montreal). Please direct me to the proper solution if you disagree with the timer solution. |
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You have a heat pump in Montreal? Usually those are not effective above Phila. Or NYC. Anyway, there is a defrost cycle in a heat pump, either electric or through a reverse solenoid. 1 of these may be bad. I'd get a couple of experienced people to look it over. Unless you have a "Cold Climate" heat pump, I'd look into NG or Propane heat?
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Comment on ma0641's post
Heat pumps are efficient in cold temperature to 0F for your information.
Like I said in my question I owned a heat pump for 20 years prior to this one which is 13 years old. Whenever the tem goes below 0F the system reverts to emergency el heat |
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