Hello my name is James. I am a Migali tech. The P-1 is an error of the Room or Box probe. It could be disconnected at the B1 connection on the logic board in the back of the unit. Another place it could be disconnected is the mid connection in the evaporator housing. You can check the probe by checking resistance on the probe. In ice water at 32 degrees you should read 26.7 to 27.8 K/ohm’s.
Hope this was helpful. Just found this site.
In most every case, generally speaking, this code would indicate that the temp probe for the conditioned space has failed. Finding support for this proves to be difficult but in my 30+ years of refrigeration work, this almost always seems to be the issue. I would pursue this area first as the "P" usually means probe.
SOURCE: P1 error code on LX30 Hobart
This is a bad sump temperature probe. The unit will function, but will not heat nor display the wash water temperature.
This is a very easy fix. Order Hobart part number 328994 from your nearest Hobart parts dept.
Turn off and drain the unit. Kill the power to the unit at the circuit breaker. Remove the lower front cover. Locate the screw-in temperature probe at the front of the sump. Unplug the sensor from the wiring harness, remove with a 7/16" open end wrench. Screw in the new probe, using teflon tape of the threads, snuggly. It does not need to be super tight. Plug it into the harness, reinstall the front cover, turn the breaker back on, and start up the unit.
TURN THE BREAKER OFF AS EVEN WITH THE UNIT "OFF" THERE WILL BE 120 VOLTS PRESENT AT THE SUMP HEATER (yellow wires) DUE TO ONLY ONE LEG OF POWER BEING SWITCHED OFF!
Testimonial: "You were right! can you help mr with a P2 error code?"
SOURCE: my ducted air conditioning has an error code on
Hello
Check that the filters are clean and check that the sensor is still in place if all is check and still gives error code then the sensor is faulty.
Thanks
SOURCE: What does P1 mean
t appears to mean "defrosting." In other words, the condenser coils have gotten too cold and are icing up..
The filter is probably full, or the thermostat is faulty. Open it up and clean the filter first.
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