

Hestan refrigerator
showing P1
A flashing P1 on the LED controller of a Hestan undercounter unit means the thermostat probe, the sensor the controller uses to read the compartment, has failed.
Mon–Sat, 8am–8pm
- Sensor circuit
- Controls and sensors
- Source: Hestan
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What P1
actually means.
A flashing P1 on the LED controller of a Hestan undercounter unit means the thermostat probe, the sensor the controller uses to read the compartment, has failed. Without a trustworthy reading the controller cannot hold the set temperature reliably. Hestan lists no owner fix for it.
Hestan refrigerator display
What to do when P1 shows on the refrigeratorKind of codeSensor circuit
A temperature sensor reading outside its range, or the wiring to it. The reading is confirmed with a meter before any part is ordered.
Usually leads toControls and sensors
A refrigerator cools to what it believes the temperature is, and a sensor reading wrong is obeyed perfectly.
Shows up asRefrigerator Freezing Food
Lettuce frozen solid and milk with ice in it, in a compartment that is not supposed to freeze.
MakeHestan
A Californian maker known for ranges and outdoor kitchens, with refrigeration columns and undercounter units.
SourceHestan Indoor / Outdoor Undercounter Refrigeration Use & Care Manual (Hestan PDF), Troubleshooting table
Hestan 24-inch indoor/outdoor undercounter units with the LED controller: GRS and GRG refrigerators, GRR refrigerator drawers, GRFR refrigerator/freezer drawers and GRWS/GRWG dual-zone models, per the manual's model list.
Before you book,
in this order.
Each step comes from Hestan's own guidance for P1 on its refrigerators. Follow it to the end: the last card says whether this is a visit.
Note the model number from the rating label on the inside top of the cabinet.
Put an appliance thermometer inside and check the real temperature over a few hours.
Move anything that cannot tolerate a change in temperature, then book a visit.
What not to do
P1 is not P2. P1 concerns the probe that reads the compartment; P2 is the probe on the evaporator.
What you may
notice with it.
The refrigerator problems P1 tends to arrive with. Answer these at the refrigerator before anyone is booked.
All problems
Refrigerator Freezing Food
5 causes, cheapest first
Where P1 usually leads
Controls and sensors.
Read these
before the visit.
Short guides that make the call quicker and the diagnosis cheaper.
All guidesHestan
refrigerators.
A Californian maker known for ranges and outdoor kitchens, with refrigeration columns and undercounter units.
Hestan refrigerator repairMore Hestan codes
Sensor circuit on other makes
In Hestan's own words
LED Controller display is flashing "P1" … Thermostat probe has failed.
Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Hestan 24-inch indoor/outdoor undercounter units with the LED controller: GRS and GRG refrigerators, GRR refrigerator drawers, GRFR refrigerator/freezer drawers and GRWS/GRWG dual-zone models, per the manual's model list.
Hestan P1 refrigerator repair,
where we come out.
The same visit in every metro below: the code, the model number, and a diagnosis before any part is ordered.
All service areasTampa BayFL · 31 areas
Miami / South FloridaFL · 47 areas
New York MetroNY · 75 areas
HoustonTX · 36 areas
ChicagoIL · 50 areas
Los AngelesCA · 95 areas
San DiegoCA · 31 areas
Questions
about P1.
Can I clear P1 myself?
Why can't my Hestan undercounter hold its temperature with P1 flashing?
Where do I find the model number to book service for P1 on a Hestan?
Back to your everyday
Still showing P1?
Book with the exact characters, the full model number, and whether it is still cooling — on a code, that is the whole starting point.