22 Voltage supply 2 - tube heaters (UB2) electrical - Open circuit to UB2 - P20C3 Reagent - suction tube heating - Short circuit low
Voltage supply 2 -tube heaters (UB2) electrical - Open circuit to UB2 - P20C1 Reagent -suction tube heating -open circuit
Partial frosting and sweating of lines combined with poor cooling, fan belt slipping, loss of refrigerant, restricted or clogged liquid line or expansion valve malfunctioning.