Mitsubishi troubleshooting guide , If the P8 Error Code appears on the wall controller this indicates a problem with the condensing (outdoor) unit. There are several possible causes for this fault. A few are mentioned in the literature provided by Mitsubishi, but experience has shown that many other conditions can also result in the P8 Error Code. Please refer to the attached pages from the Service Manual for more information on troubleshooting. OUTLINE OF MICROPROCESSOR CONTROL ? OFF-ON switching. ? COOL/DRY-FAN selector switching. ? Thermostat setting. ? TIMER mode selector-switching and Timer setting. ? HIGH-LOW fan speed switching. ? AUTO Vane selector (AIR DISCHARGE) switching. ? TEST RUN switching. ? CHECK mode switching. (Self diagnostic trouble shooting) ? Room temperature thermistor (RT1) ? Pipe temperature thermistor (RT2) ? Auto vane’s angle setting. ? Emergency stop. ? Compressor protection device working ? Fan speed control. ? Crankcase heater control ON-OFF. ? Self diagnostic function Independent Control of Outdoor Unit OUTPUT to indoor unit INPUT from indoor unit INPUT to remote controller. This switches between the operation and stop modes each time it is press. The lamp on this button lights during operation. REFRIGERANT SYSTEM DIAGRAM. To prevent indoor coil frost, the compressor will stop when the indoor coil thermistor (RT2) reads 34°F or below after the compressor has been continuously operated for at least 16 minutes or more. When the indoor coil temperature rises to 50°F or above, the compressor will start in a 3-minute(w2) time delay.
Tags : fan speed control, crankcase heater, microprocessor control, fan selector, timer mode, pipe temperature, indoor coil, refrigerant system, diagnostic function, air discharge, independent control, thermistor, mode selector, emergency stop, remote controller
If you see unrelated pdf files with the description or copyrighted material published, please report to us, we'll correct/delete it it as soon as possible.NONE OF THOSE MATERIALS ARE HOSTED IN THIS SERVER NOR UPLOADED BY ME IN SOMEONE'S SERVERS. Read our DISCLAIMER for more detail.
We are neither affiliated with authors and brands nor responsible for its content and change of content.
Information contained herein is provided "as is" without warranty of any kind, either expressed or implied, including any warranty of merchantability or fitness for a particular purpose. In no event shall ANYONE be held liable for any loss of profit, special, incidental, consequential, or other similar claims.