Hope somebody can help with an A/C problem that has me stumped.
First occurance several months ago, the A/C compressor would not engage. After some troubleshooting found that the ECC power module was bad. Problem was solved after replacing the module. After several weeks I noticed that the compressor was not shutting off when the A/C was turned off. The symptoms were a build up of pressure in the compressor and venting of R134 through some kind of High Pressure Valve. Again, the problem was fixed by replacing the ECC power module. Now, I have the "compressor not shutting off when A/C is turned off" problem again. I can only assume that the ECC power module is shot again. Three modules bad in less than six months? Does anyone have a handle on what can cause this to happen?
First occurance several months ago, the A/C compressor would not engage. After some troubleshooting found that the ECC power module was bad. Problem was solved after replacing the module. After several weeks I noticed that the compressor was not shutting off when the A/C was turned off. The symptoms were a build up of pressure in the compressor and venting of R134 through some kind of High Pressure Valve. Again, the problem was fixed by replacing the ECC power module. Now, I have the "compressor not shutting off when A/C is turned off" problem again. I can only assume that the ECC power module is shot again. Three modules bad in less than six months? Does anyone have a handle on what can cause this to happen?