BOLDR HOME

York Mini-Split Error Codes: Troubleshooting Guide

by Dua Jones May 13, 2026

York mini-splits display fault codes as alphanumeric codes on the indoor unit's LED display. York's ductless lineup is built on a platform shared with their parent company Johnson Controls' portfolio — error codes are consistent across the York ductless range and broadly follow industry-standard designations. This guide covers the most common York error codes and recommended first responses.

Klima - Smart Home Thermostat for Mini-splits, Air Conditioners and Heatpumps

Compatible with all brands of ACs and Mini-Splits Automate Climate Management Control remotely Reduce Energy Consumption Monitor bills in realtime

Try Now

Common York Mini-Split Error Codes

Error Code	Meaning	DIY Fix?	First Step
E1	High pressure protection	Partially	Clear outdoor unit airflow; reset at breaker
E2	Low pressure / refrigerant issue	No	Call EPA-certified technician — refrigerant leak check
E3	Outdoor fan motor fault	Partially	Check for debris around outdoor unit; call tech
E4	Compressor overload	Partially	Clear outdoor unit; reset; call tech if recurring
E5	Overcurrent protection	No	Reset breaker; verify electrical supply; call tech
E6	Communication error (indoor to outdoor)	Partially	Reset at breaker; check signal wire at both units
F1	Indoor intake temperature sensor fault	No	Reset; call tech if recurring — thermistor
F2	Indoor coil temperature sensor fault	No	Call technician — thermistor replacement
P1	Freeze protection — coil too cold	Yes	Clean filter; let coil thaw 2–3 hrs; restart
P2	Drain fault / condensate blockage	Yes	Clear the condensate drain line

Frequently Asked Questions

My York mini-split shows E6 after a power outage — why?

Power outages can disrupt the communication handshake between the indoor and outdoor units, producing an E6 fault at startup. A full breaker reset (off 30 seconds, on, wait 3 minutes) resolves post-outage E6 in the majority of cases. If E6 returns consistently after the reset, inspect the signal wire connections at both the indoor and outdoor unit terminal blocks for loose or damaged wiring.

Where can I find York's complete error code list?

York's full error code documentation is in the service manual for your specific model, downloadable from York's technical literature portal using the model number from the unit's nameplate. York's dealer service team can also provide model-specific diagnostic support.