If you’re looking for help fixing your MrCool furnace, look no further! Our comprehensive MrCool furnace repair guide will explain common issues, provide troubleshooting tips, and show you how to read your model’s error codes.
PROBLEM: Actuation of high pressure switch.
FIX: Abnormality is detected when the contact of the high pressure switch opens for 3 sec. The system will be shut down. The unit will report this fault. For the first two faults within 30 minutes, the unit can be recovered automatically. If over three times, the unit cannot be recovered automatically.
PROBLEM: Actuation of low pressure switch.
FIX: When the unit runs more than 4 minutes or does not run, the low pressure switch opens for more than 3sec and the system will be shut down. The unit will report this fault. For the first two faults within 30 minutes, the unit can be recovered automatically. If over three times, the unit cannot be recovered automatically.
PROBLEM: Air discharge high temperature protection of compressor.
FIX: The exhaust temperature is higher than 125C for more than 5sec, the system will be shut down. After stopping the compressor for 3 mins, if the exhaust temperature is lower than 90C for more than 5 sec, the compressor will re-start. For the first two faults within 30 minutes, the unit can be recovered automatically. If over three times, the unit cannot be recovered automatically.
PROBLEM: Malfunction of condenser temperature thermistor.
FIX: Malfunction of condenser temperature thermistor is detected when there is a short circuit or an open circuit in the condenser temperature thermistor for more than 5 sec. The system will be shut down. The reset for the malfunction of condenser temperature thermistor is automatic.
PROBLEM: Malfunction of outdoor ambient temperature thermistor.
FIX: Malfunction outdoor ambient temperature thermistor is detected when there is a short circuit or an open circuit in the outdoor ambient temperature thermistor for more than 5 sec. The system will be shut down. The reset for the malfunction of condenser temperature thermistor is automatic.
PROBLEM: Malfunction of Exhaust Temp. Sensor.
FIX: If the exhaust temperature sensor is detected of open circuit 5 seconds successively after the compressor is started for 2 minutes or short circuit 5 seconds successively at any time . The system will be shut down. After the fault is eliminated, the system can automatically resume to operation.
PROBLEM: Normal operation.
FIX: Unit operating normally or in standby mode.
What Our Clients Are Saying About Us
I would like to recommend your company to anyoneNovember 13, 2020
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I really appreciated that you came to my house to inspect the situation and provide the quotation to me before we decide to get the new water heater. The whole process was so smooth and communicate very well. You return all my text message on the same day basis or even within short time. I would like to recommend your company to anyone.
Work was done neatly. Can barely see the pipe that was installedNovember 13, 2020
Work was done neatly. Can barely see the pipe that was installed. Priced really well.
KDM's cost was amazingly reasonable compared to all other quotesNovember 13, 2020
The tricky plumbing job was completed carefully and thoroughly . Daniel even did extra to make the job proper, within the quote . He patiently explained the work needed before and after completion . In good time, he returned calls and messages, detailed the work, listed every cost honestly, and answered any questions pleasantly . Daniel and his partner were always courteous, and respectful to keep the work clean in my house .
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I would recommend this company to anyone who is looking for a professional job at a reasonable priceNovember 13, 2020
KDM did a very professional job paying attention to safety and TSSA codes for this type of work.
At the end of the job they tested all gas fired appliances as they had the main gas off to preform this job, and made sure everything was working proper.
I would recommend this company to anyone who is looking for a professional job at a reasonable price.
I would recommend KDM Home Gas to anyone looking for quality home repair servicesNovember 13, 2020
Daniel was really great to work with. His communication and genuine care for the work being done made all the difference in the world to me especially as we’ve never had good experiences with contractors in the past.
Daniel showed up when he said he would, and took his time to explain to me what caused my humidifier to malfunction. His customer service skills are superior and his quality workmanship made the experience a pleasant one.
I would recommend KDM Home Gas to anyone looking for quality home repair services to their heating or cooling units.
Thank you guys! We couldn’t be happierNovember 13, 2020
Dan and his team were extremely professional, courteous, and clean. They showed up on time, and completed the installation exactly when they said they would finish by. Thank you guys ! We couldn’t be happier.
I highly recommend KDM HomeNovember 13, 2020
Daniel, Shane and Steve did a great job replacing our 3 appliances today. They’re true professionals that pride themselves on making sure everything is done correctly, within budget and on time. They answered all my questions and were more than willing to give helpful advice. I highly recommend KDM Home.
I would recommend KDM Home & Gas to anyone looking for great service at a good price.November 13, 2020
After our old (20+ years) unit gave out, I used HomeStars to obtain quotes for a replacement. Within 30 minutes of posting, I was speaking with Daniel, who was polite and helpful throughout the process. He offered a fair price and a few different products to choose from, and was able to do the installation the same week. I would recommend KDM Home & Gas to anyone looking for great service at a good price.
Great guys Daniel and Shane did an excellent jobNovember 13, 2020
Great guys Daniel and Shane did an excellent job clean efficient and on time also very knowledgeable will have them back to replace furnace.
KDM did our fireplace gas line and heat ventingNovember 13, 2020
We’re finishing our basement and had a gas line out in for a fireplace, as well as a heating vent out in bathroom.