Air Cools well but after about an hour, water starts coming into the coach through the discharge air side. Unit does not freeze up but if I shut the unit off, the tray that holds the water drains quickly, but doesn't drain well when the A/C is running. I always run it at high speed initially, though when you put the AC on Auto fan, it starts at high speed anyhow. This unit is in a Newmar Mountainaire 40' diesel pusher motor home

Low on freon, dirty evap, dirty filter or maybe restricted at the metering device

Sounds like your evaporator is icing up. When the air is flowing over the evaporator it cools and dehumidifies the air. That water from the air will freeze over the evaporator and turn it into an Ice block. There could be many reasons this is happening. First check your air filter, crucial that it gets changed every 2 to 4 months, if its dirty then change it. Other reasons are that the condenser and or evaporator are dirty, could be low on refrigerant. Since you say the airflow is good at the beginning of the cycle then I'd rule out the fan having a problem.

So check your filter first but I highly recommend calling a pro to check the refrigerant level.

Low ice production has multiple causes. First check condensing coil to see if they are dirty and not passing air. This is the most probable cause for low ice production. Next, measure freeze cycle time and harvest time. Freeze time is typically 20 to 30 minutes and harvest time is normally 1.5 to 3 minutes. If freeze time is long (> 35 minutes), first check water valve shuts after reservoir is full. If it does not shut off the water solenoid operated valve needs replaced. Second, find the harvest solenoid operated valve which branches off the compressor discharge and port high temperature gas into evaporator during harvest and see that evaporator side of harvest valve cools down to surrounding temperature in a few minutes 8 - 10 after freeze cycle starts and harvest time stops. If it does not cool off the valve is leaking by its seat and will require a technician to replace. Lastly, if long freeze cycle could be due to low refrigerant and will require and tech to charge properly. Ice machine are critically charged and a tech will know how to charge the right amount. Again, it is possible the metering device is not passing enough refrigerant and a technician can determine this by checking the superheat and subcool. Low subcooling <3 and a high superheat >20 typically indicate an txv (metering devise) needs replaced and will require a tech to replace.

If compressor starts, check the running current of the compressor. If amperage is too high together with the discharge pressure, try cleaning the condenser fins and then after cleaning test the amperage and pressure again. If the pressure is still above the normal operating of 300psi, release some freon. If the discharge is too low below 200psi and running ampere of compressor is below the rated ampere of the unit add some freon from the suction line until it reaches 60-65psi. If still suspicious with the unit, try removing all freon charge and evacuate the system to 30 in. Hg to remove any moisture from the system and hold the vacuum for 30 minutes. If no increase in system pressure, recharge and check pressures and amperage.

Are there any filters? If they are clogged the unit will not work properly and the temp will not drop as much as it should as it cannot absorb the air in the trailer or room.

make sure the cooler(s) are clean. Next check the airend discharge temperature switch commonly called a HAT (High Air Temp) switch. These switches will reset as the compressor cools down. I would be able to access the switch quickly. Run unit until shutdown remove wires and see if switch is open. if open you found your problem

Hi and welcome to FixYa, I am Kelly.

When a refrigerator slows down ice production it is usually the result of poor air-flow through the evaporator coils. The poor air-flow is due to ice build up on the evaporator coils. The ice build up happens because the unit is not defrosting properly or the evaporator fan is not running at full speed.

To answer your question "Can an Ice-maker tube freeze?" Yes, they can and do freeze but when they do freeze that is caused by a defective inlet water valve that is leaking water by when it is supposed to be shut off. It can freeze if some one set the temp control to MAX cold. Additionally when they do freeze and the Ice-maker cycles the plastic hose on the back of the unit pops out of the ice maker tube and each cycle starts porting ice maker fill water on the floor.

This may sound odd.. but. Perform a manual defrost by removing the freezer contents and directing a fan into the freezer compartment for just over 2 hours. (Makes a water mess so do not leave it unattended) The return the unit to normal service and after 8 hours start watching the amount of ice produced. (Should be normal for 2 days!) If after 2 days the ice production slows again you have an automatic defrosting problem that is causing the ice build up on the evaporator coils.

If you need any more assistance please include your complete model number in any future responses.

Thanks for choosing FixYa,
Kelly

Was it pretty cold outside the last few times you ran it?

what refig and where are the pressures. freeze up is always low charge or lack of air flow and always occurs at the evap. Once it starts and you loose surface area you have to defrost manually

I have a GE Profile PSW26P Stainless Steel Side by Side refrigerator that makes plenty of ice but will not dipense when the lever is pushed. The dispenser makes not sound when engaged. What do you think the problem is.