Blueridge mini split error codes
Blueridge (Alpine Home Air's brand) has used more than one maker. The BMKH series, from the 2016 units through the current floor-ceiling models, is Gree-built: its manuals list the Gree table (E1 high pressure, E6 communication, F0 refrigerant, C5 jumper). The newer BMY and BMX S-series single-zone units ship with Midea's owner's manual (document CS78421, the same one Pioneer's Midea-built units use), so those are listed here under the Midea codes. Check the model number on the indoor unit's label.
Covers: BMKH wall-mount, floor-ceiling and multi-zone (2016 and later), BMY / BMX S-series single-zone (2023 and later).
Most looked-up Blueridge codes
All Blueridge codes
99 codes. Type to filter the list.
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Code Meaning Type Fix
E1 BMKH series (Gree-built): High pressure protectionBMY / BMX S-series (Midea table, classic codes): Communication error between indoor and outdoor unitsVaries DIY checks E2 BMKH series (Gree-built): Indoor anti-freeze protectionBMY / BMX S-series (Midea table, classic codes): Zero-crossing signal detection errorVaries DIY E3 BMKH series (Gree-built): Low pressure protection (refrigerant shortage or blockage)BMY / BMX S-series (Midea table, classic codes): Indoor fan speed out of control (indoor fan motor fault)Varies DIY checks E4 BMKH series (Gree-built): Compressor discharge temperature too highBMY / BMX S-series (Midea table, classic codes): Indoor room temperature sensor (T1) open or short circuitVaries DIY checks E5 BMKH series (Gree-built): Over-current protectionBMY / BMX S-series (Midea table, classic codes): Evaporator coil temperature sensor (T2) open or short circuitVaries DIY checks E6 Communication error between indoor and outdoor units Fault DIY checks E7 Mode conflict (multi-zone) Protection DIY E8 High temperature protection (overheating) Protection DIY checks E9 Indoor unit water-full (drain) protection Protection DIY EE EEPROM (memory) error on a control board Fault Technician Fo Refrigerant recovery (pump-down) mode Status DIY F0 BMKH series (Gree-built): Refrigerant shortage or system blockage detectedBMY / BMX S-series (Midea table, classic codes): Overload current protection (compressor over-current)Varies DIY checks F1 BMKH series (Gree-built): Indoor ambient (room) temperature sensor fault (open or short circuit)BMY / BMX S-series (Midea table, classic codes): Outdoor ambient temperature sensor (T4) open or short circuitFault DIY checks F2 BMKH series (Gree-built): Indoor evaporator coil temperature sensor fault (open or short circuit)BMY / BMX S-series (Midea table, classic codes): Condenser coil temperature sensor (T3) open or short circuitFault DIY checks F3 BMKH series (Gree-built): Outdoor ambient temperature sensor fault (open or short circuit)BMY / BMX S-series (Midea table, classic codes): Compressor discharge temperature sensor (TP) open or short circuitFault DIY checks F4 BMKH series (Gree-built): Outdoor condenser coil (middle) temperature sensor fault (open or short circuit)BMY / BMX S-series (Midea table, classic codes): Outdoor unit EEPROM parameter errorFault DIY checks F5 BMKH series (Gree-built): Compressor discharge temperature sensor fault (open or short circuit)BMY / BMX S-series (Midea table, classic codes): Outdoor fan speed out of control (outdoor fan motor fault)Fault DIY checks F6 Overload frequency limiting (protection) Protection DIY F8 Over-current frequency limiting (protection) Protection DIY F9 High discharge temperature frequency limiting (protection) Protection DIY FH Anti-freeze frequency limiting (protection) Protection DIY H1 Defrost cycle running Status DIY H3 Compressor overload protection Protection DIY checks H4 System overload protection Protection DIY checks H5 IPM (inverter module) protection Protection Technician H6 Indoor fan motor not running (no feedback) Fault DIY checks H7 Compressor desynchronization (loss of sync) Protection Technician HC PFC (power factor correction) protection Protection Technician U7 Four-way (reversing) valve fault Fault Technician U8 Indoor fan (PG motor) zero-crossing detection error Fault DIY checks C5 Jumper cap malfunction (missing or wrong jumper) Fault DIY checks PH DC bus high voltage (over-voltage) protection Protection DIY checks PL DC bus low voltage (under-voltage) protection Protection DIY checks Lc Compressor start failure Protection Technician Ld Compressor phase loss or phase sequence error Protection Technician LE Compressor stall (locked rotor) Protection Technician LP Indoor and outdoor unit mismatch Fault DIY checks oE Outdoor unit fault (see outdoor board) Fault Technician U5 Whole-unit current detection error Fault Technician F7 Oil return cycle (cooling) Status DIY LA Outdoor DC fan motor error Fault DIY checks LF Compressor over-speed protection Protection Technician P0 BMKH series (Gree-built): IPM reset (drive module restarted)BMY / BMX S-series (Midea table, classic codes): Inverter module (IPM) malfunctionProtection Technician P5 BMKH series (Gree-built): Compressor current protectionBMY / BMX S-series (Midea table, classic codes): Mode conflict (multi-zone)Protection Technician P6 BMKH series (Gree-built): Communication error between inverter drive and main controllerBMY / BMX S-series (Midea table, classic codes): Outdoor low pressure protectionVaries Technician P7 Inverter heat sink temperature sensor error Fault DIY checks P8 Inverter heat sink (radiator) overheat protection Protection DIY checks P9 AC contactor protection Protection Technician Pc Current sensor error Fault Technician Pd Sensor connection protection Fault Technician PE Temperature drift protection Protection Technician PF Drive board ambient temperature sensor error Fault DIY checks PA AC current protection Protection DIY checks PU Charging circuit error Fault Technician PP AC input voltage anomaly Protection DIY checks E0 Indoor unit EEPROM parameter error Fault DIY checks EC Refrigerant leak detected (low refrigerant charge) Fault DIY checks EB Communication error between indoor main board and display board Fault DIY checks EF Intelligent eye (occupancy sensor) module error Fault DIY P1 Over-voltage or under-voltage protection Protection DIY checks P2 High temperature protection (compressor top or inverter module) Protection DIY checks P3 Outdoor temperature too low protection (heating lockout) Protection DIY P4 Inverter compressor drive error Protection Technician dF Defrost cycle running Status DIY CL Filter cleaning reminder Status DIY AP Wi-Fi pairing (access point) mode Status DIY EH 00 Indoor unit EEPROM parameter error Fault DIY checks EL 01 Communication error between indoor and outdoor units Fault DIY checks EH 02 Zero-crossing signal detection error Fault DIY checks EH 03 Indoor fan speed out of control Fault DIY checks EH 60 Indoor room temperature sensor (T1) open or short circuit Fault DIY checks EH 61 Evaporator coil temperature sensor (T2) open or short circuit Fault DIY checks EL 0C Refrigerant leak detected (low charge) Fault DIY checks EH 0A Indoor unit EEPROM parameter error Fault DIY checks EH 0b Communication error between indoor main board and display board Fault DIY checks EC 51 Outdoor unit EEPROM parameter error Fault Technician EC 52 Condenser coil temperature sensor (T3) open or short circuit Fault DIY checks EC 53 Outdoor ambient temperature sensor (T4) open or short circuit Fault DIY checks EC 54 Compressor discharge temperature sensor (TP) open or short circuit Fault DIY checks EC 56 Coil outlet temperature sensor (T2B) open or short circuit Fault DIY checks EC 07 Outdoor fan speed out of control Fault DIY checks PC 00 Inverter module (IPM) malfunction Protection Technician PC 01 Over-voltage or under-voltage protection Protection DIY checks PC 02 Compressor top temperature (overload) protection Protection DIY checks PC 03 Pressure protection (high or low pressure switch) Protection DIY checks PC 04 Inverter compressor drive error Protection Technician PC 08 Outdoor over-current protection Protection DIY checks PC 0A Condenser high temperature protection Protection DIY checks PC 0F PFC module malfunction Protection Technician PC 40 Communication error between outdoor main board and inverter board Fault Technician PC 43 Compressor missing phase (lack of phase) protection Protection Technician PC 44 Compressor zero-speed protection Protection Technician PC 46 Compressor speed out of control Protection Technician PC 49 Compressor over-current (phase current) protection Protection Technician FP Low-temperature heating hold (46°F freeze-protection mode) Status DIY FC Forced cooling test mode Status DIY LL Remote or wired controller locked Status DIY cF Anti-cold-air (heating warm-up) Status DIY CP Remote on/off contact open Status DIY
No code matches that. Check the characters (b and 6, 0 and o, and E and F are easy to confuse) or try another brand .
How Blueridge shows error codes
BMKH series (Gree-built): The code shows on the indoor unit's display in place of the temperature. If the display is off, press the Light button on the remote. Some models also count out the code as indicator blinks. E codes are system protections and faults, F codes are mostly sensor faults, H codes are outdoor and compressor protections, U codes are motor and valve faults, and P codes are power-supply faults.
BMY / BMX S-series (Midea table, classic codes): The code appears on the indoor unit's LED display in place of the set temperature. Some models also blink the indicator lamps in a pattern that matches the code. E codes are faults in the indoor unit or its communication link, F codes are faults on the outdoor side, and P codes are protections: the outdoor unit has stopped itself to prevent damage. EC is the refrigerant leak check.
BMY / BMX S-series (Midea table, four-character codes): The display shows a two-letter prefix and a two-character suffix, either together (EH60) or alternating (EH, then 60). Write both parts down; the suffix is what identifies the fault. EH and EL are indoor-side faults, EC is an outdoor-side fault, and PC is an outdoor protection: the unit stopped itself to prevent damage.
Brands built on the same platform
These brands share a code table with Blueridge because the same factory builds them, so their pages describe the same faults: ACiQ , AirEase , Arcoaire , Arctic King , Armstrong Air , Bosch , Bryant , Carrier , Comfortmaker , Concord , Cooper & Hunter , Day & Night , Della , Ducane .
Sources
Blueridge Installation and Owner's Manual (BMKH, 11/2016 and 01/2017 editions), Diagnostic Codes Blueridge BMKH Floor-Ceiling User and Install Manual (12/2023), error code table Blueridge BMY19 Series Owner's Manual and DIY Single Zone Installation Manual (2020), Midea document CS78421-548-754 (same manual family as Pioneer WYT)
Updated September 2026. Manufacturer site: www.alpinehomeair.com