04-18-2023, 07:38 AM
Good Morning TJ.
I think that you may be at Leo's getting the radiator situation addressed. And if so, I can guess two things. The coach is landlocked, and it's HOT cause it's already summer in AZ. So it may be difficult to run the diagnostics right now.
However, the data you reported is somewhat in conflict with what I would expect. Primarily high amperage and low discharge air temperatures. Those don't normally go hand in hand. Keep in mind that the remote armchair quarterback is not able to observe the problem, and can only react to what is reported. I asked some very specific questions in my first reply for very specific reasons. I probably should have taken more time to explain why the answer factored into the diagnosis.
I am going to edit the first reply and put the questions in red, so that if you still want help, you can run the diagnostic when the circumstances permit. There are a number of scenarios that fit what you are describing. One, is low refrigerant. Two, is a partially obscured or failing expansion valve. That produces high compressor current and low pressues (low air discharge temps). This is why we need to see what the current draw is over time. If it starts low and steadily climbs until the thermal protection kicks in on the compressor then that points to a failing expansion valve.
If you are cooking and want to try a hail Mary, then access the circuit board and swap the connectors on the compressor leads so that Comp 1 is now plugged into the Comp 2 plug, and Comp 2 is plugged into the Comp 1 plug. That might get you some AC.
Another question when you can access the unit. Have ports been added for gauges? The units did not come from the factory with ports. If you see them, then the unit has been serviced previously. But ports would allow us to take some very valuable readings.
Jack is correct, any discharge temp lower than 32 is bad news. Ice will form on the evaporator coils and block the air flow, once that happens the pressures will spike, compressor overheats and trips the thermals. However, given you are in dry AZ and this happens within ten minutes, we need the other data to try to see what is going on.
I think that you may be at Leo's getting the radiator situation addressed. And if so, I can guess two things. The coach is landlocked, and it's HOT cause it's already summer in AZ. So it may be difficult to run the diagnostics right now.
However, the data you reported is somewhat in conflict with what I would expect. Primarily high amperage and low discharge air temperatures. Those don't normally go hand in hand. Keep in mind that the remote armchair quarterback is not able to observe the problem, and can only react to what is reported. I asked some very specific questions in my first reply for very specific reasons. I probably should have taken more time to explain why the answer factored into the diagnosis.
I am going to edit the first reply and put the questions in red, so that if you still want help, you can run the diagnostic when the circumstances permit. There are a number of scenarios that fit what you are describing. One, is low refrigerant. Two, is a partially obscured or failing expansion valve. That produces high compressor current and low pressues (low air discharge temps). This is why we need to see what the current draw is over time. If it starts low and steadily climbs until the thermal protection kicks in on the compressor then that points to a failing expansion valve.
If you are cooking and want to try a hail Mary, then access the circuit board and swap the connectors on the compressor leads so that Comp 1 is now plugged into the Comp 2 plug, and Comp 2 is plugged into the Comp 1 plug. That might get you some AC.
Another question when you can access the unit. Have ports been added for gauges? The units did not come from the factory with ports. If you see them, then the unit has been serviced previously. But ports would allow us to take some very valuable readings.
Jack is correct, any discharge temp lower than 32 is bad news. Ice will form on the evaporator coils and block the air flow, once that happens the pressures will spike, compressor overheats and trips the thermals. However, given you are in dry AZ and this happens within ten minutes, we need the other data to try to see what is going on.
Richard and Rhonda Entrekin
99 Newell, 512
Maverick Hybrid Toad
Inverness, FL (when we're home
)