Appliance Error Codes by Type & Brand

U4 Daikin · Air Conditioner / Heat Pump The indoor unit has lost its data link with the outdoor unit, so the system can't cool or heat. Moderate E6 Mitsubishi Electric · Air Conditioner / Heat Pump The indoor unit isn't getting valid signals back from the outdoor unit over the S3 wire. Moderate E15 Bosch · Dishwasher Water reached the base pan under the tub and the Bosch leak protection shut the cycle down. Moderate E24 Bosch · Dishwasher Your Bosch couldn't pump the water out in time. Most often a clogged filter or a blocked drain… Low E25 Bosch · Dishwasher Something is jamming the Bosch drain pump, or the pump cover under the filter isn't seated.… Low AE LG · Dishwasher Water collected in the LG base pan and lifted the leak float. Find the leak before restarting. Moderate

10 Rinnai · Water Heater / Boiler The Rinnai can't breathe: a frozen condensate line, a blocked vent terminal or a dirty air… High 11 Fujitsu · Air Conditioner / Heat Pump Error 11: the serial data link on terminal 3 between the Fujitsu indoor and outdoor units has… Moderate 11 Rheem · Water Heater / Boiler Rheem tankless didn't light at startup. Rheem's own first fix: check the gas shut-off valve… Moderate 11 Rinnai · Water Heater / Boiler The Rinnai tried to light but never proved a flame – gas off, air in the line or low gas… Moderate 12 Rinnai · Water Heater / Boiler The Rinnai lit but then lost its flame or stopped sensing it – usually gas supply, venting… Moderate 126 Trane · Air Conditioner / Heat Pump 126 on a Trane ComfortLink II thermostat: it lost its data link to the furnace, air handler… Moderate 13 Carrier · Air Conditioner / Heat Pump A limit or rollout switch stayed open too long, so the furnace has locked itself out for 3… High 1C Samsung · Washing Machine The control gets no believable signal from the water-level sensor – usually its air hose, plug… Low 1dL Goodman · Air Conditioner / Heat Pump IdL (often read as 1dL) is not a fault: the furnace is powered and waiting for a call from… Minor 21E Samsung · Refrigerator / Freezer The freezer's evaporator fan isn't reporting any rotation, usually because ice has trapped… Moderate 22E Samsung · Refrigerator / Freezer The fan that moves cold air through the fresh-food section isn't turning, most often because… Moderate 23E Samsung · Refrigerator / Freezer The fan that cools the condenser and compressor behind the bottom rear panel has stopped… High 29 Rheem · Water Heater / Boiler Condensing Rheem tankless: acidic condensate can't drain, so the heater stops before it floods… Moderate 31 Carrier · Air Conditioner / Heat Pump The inducer couldn't prove a clear vent, so the pressure switch stayed open and the burners… Moderate 33 Carrier · Air Conditioner / Heat Pump A high-temperature safety switch opened, usually because too little air is moving through… Moderate 33E Samsung · Refrigerator / Freezer The small heater that keeps the ice maker's fill tube from freezing is open, so water stops… Low 39E Samsung · Refrigerator / Freezer The ice maker didn't finish its twist-and-dump cycle or reported a bad sensor, so the board… Low 3C Samsung · Washing Machine The control commanded the motor but didn't see the drum turn as expected: overload, jam, wiring… Moderate 40E Samsung · Refrigerator / Freezer The small fan that pushes freezer air into the ice room in the fridge door has stopped turning. Low 434 Lennox · Air Conditioner / Heat Pump The Lennox outdoor control can't talk to the inverter drive that runs the variable-speed… Moderate 4C Samsung · Washing Machine The washer didn't sense enough water in time – usually a closed valve, kinked hose or clogged… Low 4C Samsung · Dishwasher The Samsung didn't get enough water in time. Start with the valve under the sink and the supply… Low 51 Fujitsu · Air Conditioner / Heat Pump Error 51: the indoor fan ran far slower than commanded for about a minute, so the Fujitsu unit… Moderate 5C Samsung · Dishwasher Your Samsung dishwasher couldn't drain. Usually a clogged filter, the disposal or a kinked… Low 5C Samsung · Washing Machine The washer couldn't empty the tub in time. On front-loaders the debris filter is the first… Moderate 5E Samsung · Refrigerator / Freezer The sensor on the fresh-food evaporator reads open or shorted, so the board can't tell when… Low 7C Samsung · Dishwasher The WaterWall vane that sweeps water across the tub is blocked or off its track. Usually easy… Low 84E Samsung · Refrigerator / Freezer The inverter tried to spin the compressor, but it didn't turn or ran outside its limits, so… High A1 Daikin · Air Conditioner / Heat Pump The indoor unit's circuit board couldn't load or apply its settings, so the head refuses to run. Moderate A3 Daikin · Air Conditioner / Heat Pump A3 means condensate is backing up in the indoor unit's drain pan and the float switch has… Moderate