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Performed heating maintenance, checked media air filters. Tested electric back up heaters. Checked voltage, amperage and electrical connections. Started heat pumps, calculated btu output. Tested defrost cycle. Checked operation and temperature rise across coils.
Found no power going to 220 v circuit. Found breaker tripped at the panel that powers 220 v outlet. Thru the wall a/c had no model and serial numbers on unit. Homeowner thinks is from the 1980’s. Reset breaker and unit powered up and came on. Told him that we do not know what tripped the circuit at this point but a/c is working again. Found that the supply temp was 51 degrees, and the return was 77 degrees. System seems to be cooling fine at this point, let them know this will need replaced at some point.
Precision AC tune up for 2 Ton Amana communicating AC system. Replaced filter. Cleaned EZ trap and tested/verified drain. 18F temp split. Refrigerant pressures/subcooling ok. All electric motors and components ok. Compressor amps/indoor Amps/outdoor voltage ok. All field and manufacturing wiring/connections ok. Both coils are in good condition. System is operating well at the time of this tune up.
Performed Precision Heating Tune Up on Amana Heat Pump system. Replaced 413 Air Filter provided by the homeowner. Inspected Electrical Components on Indoor and Outdoor Units. Cleaned EZ Trap on Drain Line at Air Handler. Inspected Indoor Coil and Blower Wheel Assembly. Put system in operation and measured air temperature readings in Heat Pump Mode. Tested System with Heat Kit running and measured Amp Readings on Heat Kit. Measured Refrigerant charge on system. While performing tune up, found insulation around the Supply Trunk duct work was loose and hanging down. Resealed any areas on the Supply Trunk and around the Supply Take Off Runs where the insulation and tape had become loose. System operating within manufacturer standards upon completion.
Performed AC Tune Up on Main System for the home. Replaced the High Efficiency Aprilaire 413 Filter. Cleaned EZ Trap and Drain Line. Inspected Electrical Components on Air Handler and Outdoor Unit. Put system into operation and measured refrigerant charge and supply/return air temperatures. While system was in operation, tested Wet Switch safety device to ensure it was shutting the system down properly. System is operating to standards at this time. No maintenance was performed on the Ductless System for the sunroom due to the system not being used right now.
Talked to homeowner about fan speed noise. Adjusted damper back to her bedroom , office area, and south side vent in living room . From talking to homeowner it sounds like the sound that was waking her up was the increase in fan speed due to defrost mode. Found bathroom window and back bedrooms leaking air at windows. After making changes with the dampers the bathroom and back bedrooms are warmer, and more even with the front of the house. Told homeowner that any heat pump system in defrost mode will have a change in fan speed air noise.
Homeowner called in stating that her electric bill has increased significantly in the last month. Returned to site to test system and find root cause of issue. Spoke with homeowner upon arrival about issue and was informed that the Outdoor Unit had not been running for the last week. Proceeded to the Attic to inspect the Air Handler. Air Handler was in Heat Pump mode but the outdoor unit was not turning on. Reviewed system programming via Dipswitches. Checked 413 Air Filter which was very dirty. Replaced Air Filter with a new 413 Filter. Checked the Outdoor Unit which was on a High Pressure Hard Lockout. Reset Power to unit and tested system. Measured refrigerant charge. Refrigerant charge was to standards. The Air Filter that was replaced was blocking the Air Flow and causing the Unit to go out on High Pressure. Attempted to simulate by putting old filter back in, but due to the low Outdoor Temperature the Pressures did not increase high enough to trip the Limit. On a more moderate te
Performed 6 month check on heat pump and mini split, checked media air filter ok. Tested electric back up heaters. Started heat pump, tested defrost cycle, measured btu output. Checked voltage, amperage. Checked dip switch settings. Started mini split, checked refrigerant charge. Checked operation and temperature rise across coil.
Provide quote for diagnosing problem with zoning. Also wants quote on ductless heat pump systems for basement zones.