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hello, i have a friedrich m18cf cooling only and i want the heat pump option. the m18cf already have the reversing valve in it, i thought i could change the electronic board of the outdoor unit and inside unit with a m18yf which is already a heat pump. guess i'll have to change remote control as well. what do you guys think?
any of you already done this before?
Hi
I thought the outdoor coil was bigger on heatpumps as opposed to RACs to help collect the heat? But keep us posted and let us know how you go.
If the reversing valve is already there, all you need is to wire up.
You should have a heating mode in the remote control.
Probably as it has the reversing valve installed I would think that's part of the manufactures standardisation and I think it it would be worth converting it to a heat pump especially if your local ambient temp doesn't go below 5 degrees.
there is no heating mode on the remote control, and even if I plug the reversing valve, the outdoor electronic board dosn't have a defrost mode in it. so it will just freeze until it die.
thats why i'm looking for the part number for each board and try to purchase those boards for a reasonable price on the web.
To my knowledge, it is difficult to change only cooling to heat pump. Are you sure there is a four-way reversing valve in the unit? Is there high pressure receiver in the refrigeration system? How to control the defrost ?
A lot of things must be taken into account.
do you have a suction line accumulator?