I performed a diagnostic service call on a 2008 electric furnace. No heat upon arrival found the air filter completely plugged. This caused the limit switches to be weak. Also found the sequencer bad. Only allowing 1 of the heating elements to come on at a time. During heat pump cycling found system low on R-22. Customer just wants to use easy seal and fix the furnace now until he is able to replace it later on in the season since he just bought a new system for his house 3 months ago.
