Air Conditioner heater runs but no cooling or heating
allinone said
12:50 AM Aug 13, 2013
The 240v Dometic model B3200 roof-Top heat pump operates the fan and makes. Noise like the pump starts but no heating or cooling comes from the vents. When switching off the cooling it makes the swoosh sound like before but only blows air.
Any tips or ideas on how to trouble shoot? Thanks
Yuglamron said
01:21 AM Aug 13, 2013
Hi,
Just been through the exact same problem. I went to a Dometic agent in Bundaberg who diagnosed the problem.
When you turn on the unit does the little light flash red for a few times. I think from memory it was two or three quick flashes a short gap and the red flashes again.
First up they plugged in a brand new Remote receiver inside the MH. Wasn't that, so it was either of the two temp probes in the outside part.
I had a few problems getting a new temp probe but that was caused by an unfortunate series of events.
Since my unit was three Yrs. old and out of warranty I decided to do the job myself.
I got a new probe after a few hiccups and fitted it myself. Not hard to do but care must be taken with the coolite block inside the unit not to break it. Of course the unit must be switched off and isolated.
The probe slips into a small tube and is connected with a small connector to the circuit board. Then fixed in place with an electrical tie.
I also took the opportunity to clean the fan which was a matter of unplugging an electrical plug and two Phillips screws. I used a toothbrush and some Glen20 to keep it healthy.
I also had to buy some replacement clips to secure the covers together. Almost impossible to take the old two part clips without breaking them. Bought from a car accessory Co. Autopro Black not white like the original, but no biggie.
I tried replacing one and it still didn't work with the new one so tried the one I changed and left the new one in place.
The original one I took out replaced the second one and hey presto. All OK.
I spent approx. four weeks in Melbourne and ran the unit virtually full time on heating and now back in Qld have used it on cool to test it.
The new probe cost me $106 and the agent charged me $44 to check the system and find the problem.
If you are feel competent it can be done but depends if you feel competent to do the job, and a head for heights.
Hope this helps
Cheers
Trevor
Big Gorilla said
03:02 PM Aug 14, 2013
There are a few things it could be including the Remote, Thermostat or at worst, the Compressor. If you don't have the experience to test it, suggest you take it to an authorized Dometic repair shop.
The 240v Dometic model B3200 roof-Top heat pump operates the fan and makes. Noise like the pump starts but no heating or cooling comes from the vents. When switching off the cooling it makes the swoosh sound like before but only blows air.
Any tips or ideas on how to trouble shoot? Thanks
Hi,
Just been through the exact same problem. I went to a Dometic agent in Bundaberg who diagnosed the problem.
When you turn on the unit does the little light flash red for a few times. I think from memory it was two or three quick flashes a short gap and the red flashes again.
First up they plugged in a brand new Remote receiver inside the MH. Wasn't that, so it was either of the two temp probes in the outside part.
I had a few problems getting a new temp probe but that was caused by an unfortunate series of events.
Since my unit was three Yrs. old and out of warranty I decided to do the job myself.
I got a new probe after a few hiccups and fitted it myself. Not hard to do but care must be taken with the coolite block inside the unit not to break it. Of course the unit must be switched off and isolated.
The probe slips into a small tube and is connected with a small connector to the circuit board. Then fixed in place with an electrical tie.
I also took the opportunity to clean the fan which was a matter of unplugging an electrical plug and two Phillips screws. I used a toothbrush and some Glen20 to keep it healthy.
I also had to buy some replacement clips to secure the covers together. Almost impossible to take the old two part clips without breaking them. Bought from a car accessory Co. Autopro Black not white like the original, but no biggie.
I tried replacing one and it still didn't work with the new one so tried the one I changed and left the new one in place.
The original one I took out replaced the second one and hey presto. All OK.
I spent approx. four weeks in Melbourne and ran the unit virtually full time on heating and now back in Qld have used it on cool to test it.
The new probe cost me $106 and the agent charged me $44 to check the system and find the problem.
If you are feel competent it can be done but depends if you feel competent to do the job, and a head for heights.
Hope this helps
Cheers
Trevor
There are a few things it could be including the Remote, Thermostat or at worst, the Compressor. If you don't have the experience to test it, suggest you take it to an authorized Dometic repair shop.