Error code
Refrigerator: The room is too hot or too cold
LG refrigerator — reported by blinking lights rather than by a code. LG publishes two of these: Lo when the air around the machine has dropped below about -10°C, and HI when it has risen above about 50°C.
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What we can confirm
Signal HI, from the manufacturer's own documentation
This code has no number, because this equipment has no display to put one on. The appliance signals it instead — an alarm, a symbol or a pattern of lights — and what it means is recorded in the documentation that ships with it.
The signal
HI
LG publishes two of these: Lo when the air around the machine has dropped below about -10°C, and HI when it has risen above about 50°C. Neither means anything is broken. Both mean the refrigerator is being asked to work outside the conditions it was designed for and will not perform properly while that lasts. In this city Lo is nearly unheard of and HI is not: a cabinet in a closed garage, a utility room with no ventilation, or a kitchen where the machine has been pushed hard against a wall with no clearance behind it will all get there in August.
or call (305) 419-0291
What it narrows down to
Not a machine error — a warning about where it is standing
Diagnostic
From $95, credited to the repair
On the same appliance
What else belongs to the refrigerators
On this make a code belongs to the appliance rather than to a product line. These are the other conditions this machine can display, and the models that can show this one — a display often has more than one thing to say, and the model number decides what any of it costs to put right.
Other codes this appliance can display
The fan over the condenser has stopped turning, and the machine has noticed
The fan that moves cold around the freezer is not turning
The fan feeding the fresh food side has stopped
The sensor reporting the freezer temperature is not making sense
The fresh food compartment's own sensor is not reporting properly
The sensor that decides when to melt the ice off the coil has failed
The machine cannot read the temperature of the room it is standing in
The fan that carries cold to the ice maker has stopped
The ice maker cannot tell whether the cubes are frozen yet
The ice maker's own motor is not turning the harvest
The internal water tank is missing or not seated
The main board and the display have stopped talking to each other
The same digits mean different things on different equipment. Search the full code list
In more detail
About Refrigerator: The room is too hot or too cold
What the appliance is actually reporting
LG publishes two of these: Lo when the air around the machine has dropped below about -10°C, and HI when it has risen above about 50°C. Neither means anything is broken. Both mean the refrigerator is being asked to work outside the conditions it was designed for and will not perform properly while that lasts. In this city Lo is nearly unheard of and HI is not: a cabinet in a closed garage, a utility room with no ventilation, or a kitchen where the machine has been pushed hard against a wall with no clearance behind it will all get there in August.
The other light combinations that mean this
HI · Lo · LO · Hi
LG publishes what the indicator lights mean on the washers and dryers that have no numeric display. They are grouped here by what they mean rather than split into near-identical pages, and every pattern the maker names is printed above.
Where this appears, and why not to clear it
On the indicator lights, on a laundry machine with no numeric display. LG publishes what the patterns mean, and on those models the pattern is the entire diagnosis — it disappears the moment the power is cut. Write it down or photograph the panel before switching anything off, and count a full sequence rather than a single flash: the lights also blink to show cycle status, so treat it as an error only if the machine is misbehaving as well.
What to do about it
- Check what is around the machine — clearance at the back and the top, and anything hot beside it.
- If it is in a garage or an unconditioned room, that is the finding rather than a repair.
- Vacuum the condenser coil. A blocked coil raises the temperature in the machine room even when the kitchen is cool.
- If the room is normal and HI persists, the ambient sensor is the suspect — see the rT code.
Where this goes next
The job this usually becomes is diagnostic visit, and that page carries a starting figure and the reasons that move it. If it turns out to be nothing — and on this make a real share of these are modes, reminders and settings rather than problems — the visit ends there and you pay the diagnostic and nothing else, or call (305) 419-0291 and describe what the panel is doing before booking anything.
This article is based on:
- Official manufacturer documentation
- Internal repair procedures
- Technician repair history
- Company quality standards