Appliance Error Codes Database
Found 168 verified diagnostic error codes
American Standard fault history: the record outlasts the symptom
An American Standard furnace control keeps a record of previous faults as well as reporting the current one, and that record survives the power interruptions people perform while troubleshooting. Where a fault is intermittent, the stored history is the only evidence that survives long enough to be diagnosed. Applies to: American Standard gas furnaces whose integrated controls retain a stored fault history alongside the current status Fault history retention, and the method of retrieving it, differ between American Standard control platforms and between communicating and conventional systems. The service facts document for the exact furnace is the reference for how the history is read and how many entries are retained. Owner-safe checks: Photograph the diagnostic indication before interrupting power, even when you intend to reset the furnace afterwards. | Keep a dated note of each occasion heating has failed and how long it was unavailable. | Ask explicitly for the stored fault history to be retrieved during any service visit for an intermittent complaint. Qualified technician: Retrieving stored history requires access to the control and, on some platforms, a specific button sequence or service tool, which is a technician task. | Any entry concerning a limit, a rollout, or combustion is a stop condition regardless of the fact that heating has since resumed.
American Standard S9V2 E2.1 ignition retry lockout
On the documented American Standard S9V2, E2.1 means ignition retries were exceeded because flame was never sensed, followed by a one-hour lockout after three attempts. The code reports the failed ignition outcome; it does not prove whether gas delivery, ignition, grounding, flame sensing, venting, or control caused it. Applies to: S9V2 S-Series two-stage condensing gas furnaces This definition is restricted to S9V2 S-Series furnaces using the seven-segment integrated control display in the cited installer guide. Do not translate an older blink count or another American Standard furnace code as E2.1. Owner-safe checks: From outside closed panels, save E2.1, confirm the thermostat demand, and note sounds or factory-port observations without initiating more ignition attempts. Qualified technician: Gas pressure, venting, safeties, igniter, valve, burner, grounding, flame-current, and live control tests require licensed furnace service.
Amana PTAC codes: two characters, and the second one matters
Amana PTAC units display short two-character codes on the front panel, and both characters carry meaning. Reading only the first, or transcribing a letter as a digit, produces a lookup that lands on an unrelated entry, which is the most avoidable error in diagnosing this equipment. Applies to: Amana packaged terminal air conditioners and heat pumps covered by the Amana PTAC service literature Amana PTAC equipment spans cooling-only and heat pump models with different control generations, including units fitted with the DigiSmart control system. The service literature for the model on the chassis data plate is what maps a code, and a chart written for a different generation can give a different answer. Owner-safe checks: Photograph the display close up and read both characters from the image rather than from across the room. | Check that the supply cord is fully seated and whether any protective device on the plug has operated. | Clean the filter following the owner manual and clear anything obstructing the exterior grille that can be reached from outside. Qualified technician: Anything that requires the chassis to come out of the wall, or a meter to touch the board, belongs to a technician on equipment of this type. | A protective device on the supply cord that operates repeatedly is a stop condition rather than something to keep resetting, and it needs an electrical assessment.
Amana PTAC br code: low-voltage brownout protection
On the documented Amana PTAC controls, br means brownout or low-voltage protection. A brief br appearance for a few seconds while power is switched off is normal in the service flow; a continuous br display means the board sees transformer output below its threshold and requires supply, cord, transformer, accessory, and control checks. Applies to: Amana PTAC models covered by the M70 service procedure This reading follows the Amana PTAC service procedure cited here. Do not apply lowercase br to Amana furnaces, central equipment, or kitchen appliances; confirm the packaged terminal model and control generation. Owner-safe checks: Record whether br is momentary or continuous, photograph the voltage-model label, and note whether other equipment in the building changed simultaneously. Qualified technician: Receptacle, line connection, cord, transformer, 24-volt accessory, and control-board measurements require authorised PTAC service or a qualified electrician.
Daikin AC Error Code U4: Transmission Failure Between Indoor & Outdoor Units
Communication Error (Loss of data transmission between the indoor unit PCB and the outdoor condenser unit PCB).
HP LaserJet Error 79 (Service Error): Fast Fix & Firmware Recovery
Firmware Internal Exception (The printer received a corrupted print job, malformed PostScript/PCL data, or experienced a temporary memory lock).
Bosch Dishwasher Error Code E15: Water in Base Trough (AquaStop Activated)
Safety float switch in the base pan detected pooled water, engaging AquaStop anti-flood safety lock.
Samsung Washer 4C Error Code Explained: Meaning, Causes & Fix
Water Supply Error (The washer has detected that water is not entering the tub or water pressure is insufficient within the allotted filling time).