im dealing with a 5 ton lennox package heat pump that has me stumped ....
r-22 , back pressure is good at 48 # 40 deg ambient , head pressure runs at about 230 # , a bit high but when it comes out of a defrost and back into heating , the high side will slowly climb to 275 # and then settle down to 230 #. problem being the defrost term switch opens at 275 # and resets itself at 195 # therefore the switch does not reset and will not allow a defrost until pressure drops below the 195 # .
2700 cfm , filter , coil , registers all good , ive weighed out the charge and it was good , i presently have it operating with half the factory charge , compresser amps 12.3 \ 15 rla , delta t is 26 , pressures are 210 # over 45 # , amb is 40 , return air is 70 . there is no suction accumulator ?
package heat pump head pressure issues
Re: package heat pump head pressure issues
