Kenmore refrigerator
showing Er CO
Er CO means the main control board and the display board are no longer exchanging data.
Mon–Sat, 8am–8pm
- Communication
- Controls and sensors
- Source: Kenmore
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What Er CO
actually means.
Er CO means the main control board and the display board are no longer exchanging data. Sears lists the display board, the main power board and the wiring harness that joins them. The 795 service manual describes it as a communication error between the two boards' microcontrollers.
Kenmore refrigerator display
What to do when Er CO shows on the refrigeratorKind of codeCommunication
Two boards that stopped hearing each other — the main control and the display, or the inverter. A harness is checked before a board.
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 Control Panel Not Responding
Buttons do nothing, the display is blank or frozen, or settings will not hold.
MakeKenmore
A retail badge on appliances built by several different manufacturers.
SourceSears PartsDirect: Kenmore 795 bottom-freezer error codes (Wayback copy, Jan 2021)
Kenmore and Kenmore Elite models whose number starts 795 (built by LG); Er CO is in the Sears 795 chart and the 795.7756x service manual.
Before you book,
in this order.
Each step comes from Kenmore's own guidance for Er CO on its refrigerators. Follow it to the end: the last card says whether this is a visit.
Check that the model number on the label begins 795 before relying on this reading of Er CO.
Switch the refrigerator off at the breaker for two minutes and restore power to see whether the boards reconnect.
Book a visit if Er CO returns; the harness between the boards is checked before either board is replaced.
What not to do
A frozen or blank display with Er CO is not proof that the display board is the bad part. The same message appears when the harness between the boards is at issue.
What you may
notice with it.
The refrigerator problems Er CO tends to arrive with. Answer these at the refrigerator before anyone is booked.
All problems
Where Er CO usually leads
Controls and sensors.
Read these
before the visit.
Short guides that make the call quicker and the diagnosis cheaper.
All guidesKenmore
refrigerators.
A retail badge on appliances built by several different manufacturers.
Kenmore refrigerator repairMore Kenmore codes
All 51 Kenmore codesCommunication on other makes
In Kenmore's own words
Er CO Communication error Check/Repair Communication error between main board and display board
Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Kenmore and Kenmore Elite models whose number starts 795 (built by LG); Er CO is in the Sears 795 chart and the 795.7756x service manual.
Kenmore Er CO 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 Er CO.
Can I clear Er CO myself?
Is Er CO on my Kenmore always a bad display board?
Can a power reset clear Er CO on a Kenmore 795?
Back to your everyday
Still showing Er CO?
Book with the exact characters, the full model number, and whether it is still cooling — on a code, that is the whole starting point.