Chester Springs, PA

Customer has to reset rollout switches every morning, check system operation supply, return air temperatures, combustion test, gas, pressure, burners, inspect heat exchanger after troubleshooting found out that the unit especially with one zone calling. Temperature gets to hot that potentially triggers rollout switches. I activated the EWC supply temperature sensor in adjusted to 135° temperature so the unit will cycle on and off base on supply temperature. Provided estimate to replaced supply sensor and also adding 8 inch round bypass.

Perform six month check up on the system install last fall. Check electrical components, slow and high inspect air filter check electrical connections ok. Perform combustion test low and high stage. OK supply and return your temperatures. Customer pointed out about the duck noise and also thermostat malfunctioning. Try to reboot thermostat many times and also internet modem still thermostat will not connect to internet. Try other electronic devices to connect to home network I was able to connect without any issues. We will need to order a new thermostat and come back to install it. Also, when we come back, we need to grab some drive to brace the return drop to prevent any noise.

Arrived at call for noise and found outdoor units top completely encased in ice. Customers gutter clogged with ice and the water dripped over the edge of the gutter on top of the unit and froze over night. Spent time and removed all ice off the unit and tested system and fan blade. No issue with system at all. Told customer to keep and eye on the unit and call someone out to check on her gutter, if the issue happens again someone will have to install a small over hang off wall to divert water.

Performed diagnostic on system and found no high voltage present at unit. Found emergency burner switch was off. Turned switch in restoring power to unit and tested system before departure.

Arrived at no heat call, found thermostats and zone control board were blank. Tested voltage out of the the 40va transformer that feeds everything and was getting 2 volts out indicating a failed transformer. Gave customer options on repair and he agreed to part replacement but not a service agreement. Tested unit after repair and no other issues were present.

Set switches #1-#4 to ON on switch bank SW2 as instructed by tech support. Electric heat will energize based on Mitsubishis parameters, time, outdoor temperature. System operating well at this time.

Completed (2) Heat tune ups. Both systems 80,000 BTU 96% Replaced both Aprilaire 413 filter, both very dirty. For EACH furnace Inspected burners, inducer, pressure switches, Cleaned flame sensor, verified flame rectification circuit Ignitor in good condition, reading within acceptable ohm value Confirmed proper manifold gas pressure Inspected wiring, controls, electric motors and components; no surge protection. Left estimates for b,owner motor surge protectors Measured temperature rise and static pressure Combustion and draft test: Pass Both humidifiers are still down. I had conversation with homeowner. Left estimates to repair or replace humidifiers. Both UV bulbs are past the replacement date. 1St Fl/Basement system completely failed. Second floor system is working but past replacement age. Bulb model UC18W100C Both systems operating well at this time.

Completed heat tune up for modulating 80,000 BTU furnace. Replaced 16x25x1 filter Inspected burners, heat exchanger, inducer assembly, pressure switches Cleaned flame sensor, verified flame rectification circuit Ignitor reading within ohm value range Gas valve is modulating properly Measured temperature rise and static pressure Inspected drains. The mechanical room borders finished room with hardwood floor. Recommended wet switch which will shut equipment down if water leak is detected around equipment. They do have a 9V water alarm there. Combustion and draft tests: Pass System operating well at this time.

Estimate

Performed precision heat pump tuneup on three Lennox heat pump systems and one Bosch heat pump system. Replaced one 213 filter replaced 201 air filter and 2 1” air filters. Checked all electrical connections and components. Found week 60/7.5 capacitor replaced capacitor and tested operation. Checked all emergency heat on each system. Check temperature rise check refrigerant pressures and temperatures at indoor and outdoor units. All heat pumps are working at time of service.