Outstanding. All questions answered in terms that I could understand.
Found the zone board isn't powering up. It's receiving 24 volts the customer will replace it himself
Found that the cool button has failed on the thermostat. Removed the thermostat and repaired the button. This is only a temporary repair and may be an issue later on. No warranty on today's repair.
Checked over the system. On arrival the upstairs zone was calling for cooling but the furnace heat was on. After resetting the system the heating and cooling for that zone was working fine. Maybe an issue with the ignition board or some board. The customer also stated that the downstairs zone was blowering air even when it's not calling for heat or cooling. The dampers are weak and allowing air to past them. This zoning system is powered close spring open. I'd recommend replacing the zone system and go from there. The ignition board may need to be replaced but not sure yet as the system is operating at this time.
Completed maintenance. Washed indoor and outdoor coils. Treated and flushed drain line. Checked electric heating. Pressures and Amp draws check out OK.
Checked over the system to find everything to be working right. The customer stated the room with the thermostat feels warmer then the other areas. Each room was 71.2 degrees with the thermostat set for 73 degrees.
Found the system low on r22. This system is phased out and is 22 years old. Recommend having the system replaced.
Completed the maintenance inspection. Replaced both media filters.
Found the system low on 410a. She wants to do the pressure test in a few weeks once it gets cooler out.
Found the system low on 410a. Checked over the entire system for a leak and only came up with the service valve locking cap. A lot of dye and oil was on the bottom of the unit. Adjusted the charge to a 23 degree superheat.