Question about Mitsubishi Heating & Cooling
Code error E 03
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Posted on Jan 02, 2017
E39 Fault is thermister, Mitsubishi way of saying im not going to start because there is something wrong. Generlly it is compressor fault or short of gas. Im guessing if you turned the power out. Waited twenty seconds, turn it back on. Now if you go to the outdoor part. Wait exactly 3 mins. If you hear the compressor try to start and fail then it would more then likely be your compressor if you dont hear anything and the unit faults out it will either be a board or short of gas.
Either way If the unit is under five years old get a warrenty agent out to look at it.
Sorry I couldnt tell you for sure but MHI are very vague when it comes to fault codes
Posted on Mar 05, 2009
I had a variety of error codes show up on my duet, and I'm not sure but I seem to recall a 31, but the most constant was 02. I took off the front cover, pulled the white plug out from the unit, put a bucket under it, unscrewed it and drained it. It may be the MCU is having problems because the washer got plugged up.
Posted on Apr 24, 2009
SOURCE: error code e03
This is a code for a thermal fuse open. A thermal fuse is a saftey device I always call a wax switch, It's a switch held closed by wax and if it get's too hot the wax melts and the switch opens shuting the heater down.
Changing this out will not fix the problem. It's job is to keep the heat source from hurting the heater. In other words you have fire backing up into the heater outside the fire box. This can be a fan problem or sometyhing as bad as a broken firebox. You will probally need to get a repairman involved at least to find the problem. Good luck.
Posted on Feb 17, 2010
SOURCE: error code Prr
I had this problem, and checked the connections, emptied the resivour, and refilled it, and it had no effect.
To fix the problem, I ran the regular shower on hot for 10 minutes to warm up the shower chamber. Then, when I pressed the power button on the steam shower, it displayed "110" as normal.
The problem with "Prr" appears to be that the temp sensor is reporting a value out of range. Heating the shower chamber (and therefore sensor) provides a good value to the sensor, which then allows the shower to operate.
Try warming up your sensor by running the shower.
Posted on Mar 06, 2010
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