monkey spanners
08-07-2008, 07:18 PM
Got called to a two door fridge that was not cooling.
Found the evaporator frozen up and the compressor to have an inch of ice from the suction inlet to the bottom of the compressor.
Evaporator fans running ok. Condenser fan noisey but running. Eliwell stat working ok, relay not stuck. Probe reading correct temperature. Set point correct. Drain ok.
The system runs with off cycle defost.
The only thing i found was that as the condenser fan motor cooled it siezed up a bit, on with a new motor.
My theory is that the condenser fan motor siezed, the system continued to run, it would not reach set point like this so would not defrost, possibly the fan motor has been cutting in and out and this resulted in the frozen evaporator.
Any comments welcome :D
Cheers Jon
Found the evaporator frozen up and the compressor to have an inch of ice from the suction inlet to the bottom of the compressor.
Evaporator fans running ok. Condenser fan noisey but running. Eliwell stat working ok, relay not stuck. Probe reading correct temperature. Set point correct. Drain ok.
The system runs with off cycle defost.
The only thing i found was that as the condenser fan motor cooled it siezed up a bit, on with a new motor.
My theory is that the condenser fan motor siezed, the system continued to run, it would not reach set point like this so would not defrost, possibly the fan motor has been cutting in and out and this resulted in the frozen evaporator.
Any comments welcome :D
Cheers Jon