Fort Washington, MD Air Conditioning, Heating and Plumbing Services
Supreme Air provides Air Conditioning, Heating and Plumbing Services, Repair, Installation, Maintenance, and Tune Up in Fort Washington, MD and surrounding areas.
Check out what some of our customers are saying about Supreme Air.
for Fort Washington, MD
Bernard - Fort Washington, MD
Response from Supreme Air:
Thank you Bernard for such a great review. We're working hard to ensure all of our customers feel the same about the services we provide them, whether HVAC or plumbing. We're so happy to hear we met this goal during our visit to your home. Have a supreme day!
quick ,and correct diagnosis
Bernard - Fort Washington, MD
Mr Noel - Fort Washington, MD
Spring Pm On 04/09/19 On arrival set unit to call for cooling measured supply and return air temp measured voltage and amps inspected electrical connections checked drain and cleaned checked filter and replaced also EWP and LWP it was low pump back up 65/60 psi recommended UV lights installation I was recommended last time I was customer house i talk to him again about it he is okay to have one I gave quote for customer accepted order the UV lights I have to come back this Friday to install UV lights collected $203.50 C.C .unit tested unit operating normal at this time unit. Customer needs to schedule for Friday afternoon.
The unit was turning off on high pressure in heating mode. I removed 8 oz of refrigerant but then the cooling seemed to be off. I added it back and cooling got better but then it tripped on high pressure again. I called Amana tech support and reconfigured the blower dip switches. The unit was set several 100 cfm too low. After this I still struggled getting the charge just right until I screwed the txv valve for cooling in clockwise several turns to get 7 degrees Superheat. Then I checked subcooling and had 8 degrees which is what the target is. The unit in heating modes operating above pressure table but the ambient air temperature and indoor temp are above table ratings. However it is not cutting off on high pressure. Unit operating normal in both modes with normal air flow and refrigerant charge confirmed proper.
There were 2 issues with the equipment. The outdoor unit was flashing multiple low pressure trip fault codes on the comfort alert. Refrigerant oil was all inside the suction line insulation. I sprayed the braze joint with soap bubbles and a very small leak shown. I used the leak detector to confirm. I pumped the system down and brazed both high and low joints and flushed with nitrogen and pulled into a deep vacuum. I opened the valves back up and ran the unit and added refrigerant to bring operating pressures to match data sheet and also have normal temperature rise. The second issue was that y1 and y2 were jumped out together at the air handler control board. I had heard the blower ramping up and down and it was effecting the pressures. I removed the jumper wire. I checked thermostat configuration and cycled the unit once more and also tested defrost while I was there. Unit operating normal. I took a picture of the leaking braze joint. I called the service manager to let them know
Called customer and he reset system and is heating now, told him to call us if he would like service.