Phoenixville, PA

Estimate

6/29/26. Performed quality assurance on recently installed magic pak a/c and gas furnace. Checked over all electrical connections and components. Checked refrigerant pressures and temperatures. Checked temperature split it was 19 degrees. Checked manifold gas pressure in heating mode which was 3.51 w.c. System is working properly at quality assurance check.

6/29/26. Went over trouble shooting the reversing valve with Andrew from Ferguson tech support. Gave system a call for cooling and had no voltage to the reversing valve and system was still heating. Switched over to heating mode and had 209 v ac. Tapped on the valve and it will not shift. Andrew is going to speak with his higher ups to see if next steps,

6/29/26. Performed quality assurance on recently installed trane gas furnace a/c, checked all electrical connections and components. Found wet switch wired into the system wrong. Found wet switch r tied into safety loop not circuit board, re wired and tested wet switch operation. Checked temperature split. Checked 454b refrigerant pressures and temperatures. System is working properly at quality assurance check.

Estimate

6/22/26. Fully assessed no cooling situation on 2000 Bryant a/c system. Found r-22 system was tripping the breaker. Found someone mounted the capacitor in a way that it moved and shorted up against the housing. Re did crimp ends and mounted up capacitor with plastic strapping. Compressor is shaking like crazy and is going to mechanically fail. Recommend to Dave to get a cost on system replacement possibly up grading to a heat pump. He will give us a call.

Double checked all dipswitches at indoor control. Set for 12,000 BTU and correct indoor unit. Dipswitch SW5-8 is turned on to account for us having a non Mitsubishi control (Honeywell) Checked resistance of reversing valve coil: Called Mitsubishi tech support 1800-433-4822 they provided case number case no: 1054867 Followed troubleshooting procedures. Remove power to compressor>turn cooling ON>wait 3 mi>check voltage at P.C. Inverter board terminals 271….0Volts. Flow chart states: replace reversing valve. Tech support confirmed bad reversing valve. Talked to our management we will contact Ferguson.

6/17/26. Fully assessed issues with recently installed 7 head mini split system. After further troubleshooting found that when you gave a call for cooling at attic 4 way cassette it then sent refrigerant to the office unit . Confirmed this by finding it was freezing the office coil. Found communication wire for A&B units switched at the basement branch box. Rewired correctly and tested operation of all the cassette units, they were all cooling properly. Also clipped the jumpers on the 2 back bedroom units on the control boards. Added 2 wireless sensors for kitchen and living room cassette units. Tested operation. Everything now seems to be functioning correctly.

Reviewed wiring for boiler system and found when one zone is calling that multiple zones are coming on. Tested removal of boiler from wiring to see if the same problem persists. The same thing was happening. There are two transformers, one on the zone circ relay and one on the boiler that may be crossing paths. Installed six isolation relays above the boiler relays and rewired the system to energize the isolation relay off of the thermostat and wire TT from the pump relays to the normally open contact of the isolation relay. Tested each zone to ensure proper operation. The transformer for the system is 75 VA. If all 6 zones are calling, the load on the transformer may exceed the rating. It would be best to upgrade the transformer to a 150 VA transformer. The customer is okay with doing this in the fall before the heating season.

6/5/26. Ran system in cooling mode ( could not test at last visit). Went over reversing valve testing. Checked for 230 v after 3 minutes. It went away , by the troubleshooting chart this indicates a failed reversing valve stuck in heating mode. Will go over info with our office.