Intertherm P3RA-048K Air Conditioner - Page 2 - Answered Questions & Fixed issues

Open up unit locate evap.coil with small brush clean coil then use evap.coil cleaner its self rinsing but if you can wash with hose without getting water inside home do so.

Blue hose goes to suction side which would be larger size copper line this is your low side.red hose to other side smaller line,high side.Yellow hose to freon container.

If its the original mtr. or was working fine before then mtr is bad replace mtr with new capacitor

THE MOTOR IS A 3 PHASE MOTOR JUST SWITCH ANY TWO WIRES TO THE MOTOR AND THE MOTOR WILL RUN THE OTHER DIRECTION. BE SURE TO DISCONECT THE POWER TO THE UNIT BEFORE DOING THIS.

If it's a 90%+ gas furnace, check the combustion air pvc pipe for blockage, if not enough air for proper combustion, control board will shut down the flame to keep from burning poorly! Check your air filter, there's an overtemperature safety switch in the heat exchanger to protect the furnace/ your house, and low airflow will cause the heat exchanger to overheat. Finally, check to see if the flames actually ignite, if no flame, the controller will reset and try again, then if no flame, the controller will reset and try again, then if no flame, the controller will reset and try again, then if no flame, the controller will reset and try again.... get the idea? :) If this is the case, check my other solutions, I just answered someone elses question about non ignition. Hope this helps.

Hello, this sounds like a faulty capacitor. Replace capacitor to the motor.

the thermocouple has a flat nut on top holding it in place. remove nut and it will drop out the hole

use small soft bristle brush with a vaccuum to remove loosened dust or debris

Have you got the a/c unit slightly tilted backward so the condensation will drip outside.

Check the capacitor and verify if the motor is receiving voltage, if not ithen the motor is bad.

CHECK FLUE FOR OBSTUCTIONS AS WELL AS COMBUSTION AIR INTAKE FIRST. THEN CHECK TO SEE IF THE FURNACE DRAIN IS OPEN AND NOT CLOGGED [ONLY IF YOUR FURNACE IS A CONDENSATING HIGH EFFICIENCY MODEL, typically the flue pipe will be 2 or 3 inch pvc pipe] over the years more often than not, it is an obstruction or poor drainage which will not prove the pressure switch to allow the burner to ignite. in rare cases the furnace control board could be bad as well.TRY DISCONNECTING FLUE AND COMB. AIR AT FURNACE JUST TO SEE IF FURNACE WILL IGNITE. HOPE THIS HELPS!!!!!!

PLEASE call a serviceperson,but, it sounds to me like your furnace is burning dirty and needs the electrodes cleaned or replaced as well as the proper oil nozzle and filter hope this helps you out, OH, one more possibillity is the furnace or flue chimney could be stopped up or the air mixture is not set properly on the burner. ANY OR ALL OF THESE COULD CAUSE CARBON MONOXIDE POISONING C/M IS ODERLESS AND COLOROUS AND CAN KILL YOU QUICKLY. CALL A REPUTABLE SERVICE PERSON PLEASE!!!!!!!!

It is possible that high temp limit is shutting you down.make sure your blower is running when t-stat is calling for heat.if notstart at the heat sequencer which cuts the blower on with first bank of heat. it will be dangerous and difficult to troubleshoot this prob without a multimeter and experiance with elect. components

Hi, you will have a chart glued to a panel with a list of codes per flashes telling you what to check with 4 flashes. Read this and get back to me on what is is telling you.Robert Horton

Hi, sounds like the MGV is not shutting off all of the way/ That would be the only reason gas would continue to flow, even on a small scale. If this keeps up, change that valve!! Do not take it apart, never! Good luck,Robert HortonPS MGV ( Main gas valve )

Your furnace is shutting off on the high limit switch because of this. You are having a problem with the blower motor. You need to check for power from the wires on the board that feeds the motor. If you have voltage, and your run capacitor is good, you have a faulty blower motor. If its a fan relay, the fan would start and run all of the time. Check power to motor right after furnace shuts the burners off.Robert Horton

Hi, most of the time, they tuck the manual in the heating section of the unit. Look around and you may find it. If you have then go with what Mike said to do.Robert Horton

Hi, did he bypass the high limit to see if it was bad? Sounds like you are getting false codes and you have a problem in your module or main board, which ever you have. The way it is acting, saying the high limit is open but the tech says its not, I would change the board.Shastalaker7

Hi, If the code was your pressure switch and you replaced it, you have to kill the power to the unit for a minute or two, to reset all.Shastalaker7

Hi, change out the faulty high limit switch thats keeping your fan off in the heat mode.Shastalaker7