Azmcarroll
Premium Member
- Model Number
- ZISS480DMCS
- Brand
- GE
- Age
- More than 10 years
Hi been working through issues on our 2004 GE Monogram, recently had a compressor installed as well as the defrost pan, this is the fixed compressor speed unit with 2 speed evap fan, 1 speed condenser fan. It does not have an inverter, that was a later model I believe.
A couple weeks after the repairs a new issue developed, the evaporator fan is slow to come up to speed. What’s happening is the compressor will kick on with condenser fan due to demand from the fridge or the freezer, but the evaporator fan will rotate very slowly and hum, and then a few minutes later in some cases more than a few, it’ll spin up to high speed and once running it will ramp down to its mid speed before shutting off.
Tech has the service guide for the unit, checked the wiring between the controller board in the mechanical cabinet above, into the freezer evap motor plug and all four wires with good continuity. The fan motor was replaced, no change. Checking out the controller reading tV DC on the yellow wire goes to 12 V when it kicks on and runs in its high speed, but before that it’s just a 1-2V which seems low based on the service guide. After the fan gets up to speed in Hymo mode it’ll ramp down and the yellow wires at 9 V, and the blue rpm wire is reading 190 and high and 150 Hz in low. After the fan gets up to speed in hi mode it’ll ramp down and the yellow wires at 9 V, and the blue rpm wire is reading 190 and high and 150 Hz in low.
So question is, looking at a controller board to be installed in the morning is there anything else you all would recommend looking into. Tech is good with meters.
No issue with cooling after the new compressor, keeps temperature very well. The old one had lost compression.
thanks
A couple weeks after the repairs a new issue developed, the evaporator fan is slow to come up to speed. What’s happening is the compressor will kick on with condenser fan due to demand from the fridge or the freezer, but the evaporator fan will rotate very slowly and hum, and then a few minutes later in some cases more than a few, it’ll spin up to high speed and once running it will ramp down to its mid speed before shutting off.
Tech has the service guide for the unit, checked the wiring between the controller board in the mechanical cabinet above, into the freezer evap motor plug and all four wires with good continuity. The fan motor was replaced, no change. Checking out the controller reading tV DC on the yellow wire goes to 12 V when it kicks on and runs in its high speed, but before that it’s just a 1-2V which seems low based on the service guide. After the fan gets up to speed in Hymo mode it’ll ramp down and the yellow wires at 9 V, and the blue rpm wire is reading 190 and high and 150 Hz in low. After the fan gets up to speed in hi mode it’ll ramp down and the yellow wires at 9 V, and the blue rpm wire is reading 190 and high and 150 Hz in low.
So question is, looking at a controller board to be installed in the morning is there anything else you all would recommend looking into. Tech is good with meters.
No issue with cooling after the new compressor, keeps temperature very well. The old one had lost compression.
thanks
