Installed trunk line for 2nd unit
Arrived to No Cool Identified burnt drive board. Some kind of snake or rodent got into the control panel and grounded/shorted out the board. Installed new drive board and tested system. Functions in low to mid cool during modulation as well as high cool DCM1 complete; AC; (1) F16251 replaced. System is fully functional. All components are operating within manufacturer specifications. Refrigerant pressures and temperatures are appropriate for indoor and outdoor conditions.
Dropped off 2 A/C portables, homeowner asked if she could install them, told her how to do it and gave her tape. Checked outdoor unit for update.
Upon arrival saw thermostat code (A929_O 240V Missing or inverter comm failure). Went to outdoor unit tested voltage for disconnect, contactor and transformer received 240. Checked communication wires and wire nuts, checked continuity through communication wires. Checked molex plugs on drive board for voltage got 240. Checked molex plugs on control board and drive board to make sure they were secure. Turned off outdoor and indoor units for 15 mins to do a hard reset, turned back on checked thermostat still giving code from arrival, cleared fault on thermostat, fault immediately came back. Homeowner wants a portable until drive board gets replaced, told her I could do it tomorrow afternoon.
Removed old equipment and installed new carrier package unit a/c with electric heat. Installed fresh air damper and new thermostat. Reconnected high voltage, low voltage and drain line. Tested system operations in heating and cooling.
Set up ladder for measurement of curb adapter
Call for no cooling on arrival system was off turned on and RTU did energize, checked operation and pressures were very low would need 2-4 lbs of R22, system is from 1988, appears to be a 3 ton system, it is rusted and in poor condition due to age, efficiency, amount of refrigerant and type it is recommended to replace and upgrade system. Travis would like a Estimate for Replacement I have partnered with Keith.
Customer PO-863003542B Upon arrival no Heat in office flame would ignite and after 2 seconds would shut its self off, unit has dirty flame sensor, cleaned flame sensor and found unit had low voltage wires exposed in cabinet, cleaned up low voltage system is operating properly at this time.
DCM1 service 1 of 2 Heat completed changed (1) 16x25x1 filter, tested system operation’s everything is operating properly at this time attached is Heat maintenance checklist.