having issues with a carrier
58pha 090-16 thermostat and a code 33.
Months ago I removed the edge thermostat for a zwave thermostat so i can connect to my home automation system. Occasionally, the thermostat would call for heat or air conditioning but the unit would not always kick on. Typically, the batteries on the thermostat would need replacing, and then the unit would start up.
recently, i chnaged the wir filters to a higher merv filter....a few weeks later the unit wont turn on and throws a code 33. i assumed the filters are too restrictive and caused the lockout to take place. i reset the unit and removed one of the filters to see if the unit would start up. it would not....the burner would kick on but the fan would not turn on.
thinking it was the thermostat (as it was never "right"), i tried to hook up the original carrier edge thermostat....now the unit wont even turn on. no codes present.
i think the 58pha090 is a single stage furnice...so the wiring for the t stat should be "fairly simple"...so i dont think i screwed this up.
i jumped the r and w on the board to see if the blower would fire up. it did.
is there anything special about the thermostat wiring for the edge that i missed? i have the RC and RH jumped. no dehumidification.
any help is appreciated.