. There is a boiler for the building that supplies domestic hot water to all units and heat to hydro coils. Found zone valve for hydro coil stuck in open position which would cause coil to get heat when boiler is heating storage tanks for apartments. Forced zone valve closed. Solder joint by zone valve also leaking. Building management needs to repair because boilers need to be shut down for repairs.
Found ac system not turning on. Neither the air handler or condenser. Jumped RGY wires at thermostat and everything then turned on. Found that the thermostat was bad. Replaced thermostat. Took temperatures and pressures. Found system low on 410a. Delta t was at 8 degrees. Spoke with Kurt. Gave him all of my readings and findings. Kurt determined that the system was low on 410a. He suggested a recharge. Recharged unit. Rechecked temperatures and pressures. Delta t is now at 21 degrees. No further issues to report. Filter was replaced yesterday by son. I cleaned both coils.
Adjusted damper on supply duct in attic air flowing into room. Customer happy she has AC in her room.
Customer stated air not blowing on one zone, has 3 zones, found a bad thermostat, customer will replace the thermostat himself. Gave pricing.
Tripped breaker, reset, tested, system operational, found condenser coil dirty cleaned, checked pressureâ€™s, electrical, system operational.
Found condenser not turning on upon arrival. Checked capacitor. Checked thermostat. Checked contactor. Board on condenser has burn marks on back.
Zone damper motors taped open, motors need to be replaced along side with dampers and ewc panel, charged 5lbs 4 ounces of r-407c Freon, found leak at Evaporator Coil (r-22) recommend residential replacement.
Need to return with r-407c Freon, and price out procedure on adding Freon and doing a proper leak check on system. Factory charge is 1 lb 0 ounces.
Performed annual maintenance on air conditioning system. Changed air filter for customer. Check over duct system. Informed customer had some mold spores starting to form inside unit. Gave some recommendations for electronic air filter and UV light. System operational at this time.
Performed ac tune up. Renewed maintenance agreement. Checked all components. System is operating properly.
Arrived and found the boiler pressure at 5psi, tried to fill the boiler and the water feeder freed up and filled to the correct pressure. Once it started to fill the air vent started to leak. The water feeder was working but it will get stuck again. We are replacing the water feeder and air vent so this issue will not reoccur.
Cleaned and serviced gas boiler, checked all components and burners. The system is operating properly. Customer signed up for maintenance agreement.
Found float switch for second floor heat pump had gotten knocked over. Reset system and checked heat pump. Also main water shutoff to boiler in off position. Placed valve tag for water feeder. Turner water back on and had to bleed a couple of the second floor radiators. Reset service control on steam humidifier.
Install one 18K Mitsubishi MSZ-FH18NA Air Handler and (1) MUZ-FH18NA Mitsubishi Single Zone Hyper Heat Condensing Unit, the air handler will be installed in the living room to cool and heat the living room, dining room and kitchen., one digital remote control thermostat,