Day & Night mini split error codes

Day & Night ductless systems come from ICP (Carrier's sister company) and have used two makers. The current DLC/DLF series (DLCSRA, DLCSRB, DLFSHA and related) is Midea-built and uses the Midea code set. The earlier DLC4 / DLF4 series (2013 to 2015) is Gree-built and uses the Gree set, so E1, E5 and F1 mean different things on the two generations.

Covers: DLCSRA / DLCSRB / DLCLRA outdoor with DLFSHA / DLFSFA indoor (2015 and later), DLC4 / DLF4 (2013 to 2015).

Most looked-up Day & Night codes

E1Communication error between indoor and outdoor units / High pressure protection E5Evaporator coil temperature sensor (T2) open or short circuit / Over-current protection ECRefrigerant leak detected (low refrigerant charge)P4Inverter compressor drive error F1Outdoor ambient temperature sensor (T4) open or short circuit / Indoor ambient (room) temperature sensor fault (open or short circuit)E6Communication error between indoor and outdoor units H6Indoor fan motor not running (no feedback)

All Day & Night codes

66 codes. Type to filter the list.

Filter codes

Code	Meaning	Type	Fix
E0	Indoor unit EEPROM parameter error	Fault	DIY checks
E1	DLC/DLF series, 2015 and later (Midea-built): Communication error between indoor and outdoor units DLC4 / DLF4 series, 2013 to 2015 (Gree-built): High pressure protection	Varies	DIY checks
E2	DLC/DLF series, 2015 and later (Midea-built): Zero-crossing signal detection error DLC4 / DLF4 series, 2013 to 2015 (Gree-built): Indoor anti-freeze protection	Varies	DIY checks
E3	DLC/DLF series, 2015 and later (Midea-built): Indoor fan speed out of control (indoor fan motor fault) DLC4 / DLF4 series, 2013 to 2015 (Gree-built): Low pressure protection (refrigerant shortage or blockage)	Varies	DIY checks
E4	DLC/DLF series, 2015 and later (Midea-built): Indoor room temperature sensor (T1) open or short circuit DLC4 / DLF4 series, 2013 to 2015 (Gree-built): Compressor discharge temperature too high	Varies	DIY checks
E5	DLC/DLF series, 2015 and later (Midea-built): Evaporator coil temperature sensor (T2) open or short circuit DLC4 / DLF4 series, 2013 to 2015 (Gree-built): Over-current protection	Varies	DIY checks
EC	Refrigerant leak detected (low refrigerant charge)	Fault	DIY checks
F0	DLC/DLF series, 2015 and later (Midea-built): Overload current protection (compressor over-current) DLC4 / DLF4 series, 2013 to 2015 (Gree-built): Refrigerant shortage or system blockage detected	Varies	DIY checks
EB	Communication error between indoor main board and display board	Fault	DIY checks
EF	Intelligent eye (occupancy sensor) module error	Fault	DIY
F1	DLC/DLF series, 2015 and later (Midea-built): Outdoor ambient temperature sensor (T4) open or short circuit DLC4 / DLF4 series, 2013 to 2015 (Gree-built): Indoor ambient (room) temperature sensor fault (open or short circuit)	Fault	DIY checks
F2	DLC/DLF series, 2015 and later (Midea-built): Condenser coil temperature sensor (T3) open or short circuit DLC4 / DLF4 series, 2013 to 2015 (Gree-built): Indoor evaporator coil temperature sensor fault (open or short circuit)	Fault	DIY checks
F3	DLC/DLF series, 2015 and later (Midea-built): Compressor discharge temperature sensor (TP) open or short circuit DLC4 / DLF4 series, 2013 to 2015 (Gree-built): Outdoor ambient temperature sensor fault (open or short circuit)	Fault	DIY checks
F4	DLC/DLF series, 2015 and later (Midea-built): Outdoor unit EEPROM parameter error DLC4 / DLF4 series, 2013 to 2015 (Gree-built): Outdoor condenser coil (middle) temperature sensor fault (open or short circuit)	Fault	Technician
F5	DLC/DLF series, 2015 and later (Midea-built): Outdoor fan speed out of control (outdoor fan motor fault) DLC4 / DLF4 series, 2013 to 2015 (Gree-built): Compressor discharge temperature sensor fault (open or short circuit)	Fault	DIY checks
P0	DLC/DLF series, 2015 and later (Midea-built): Inverter module (IPM) malfunction DLC4 / DLF4 series, 2013 to 2015 (Gree-built): IPM reset (drive module restarted)	Protection	Technician
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
P5	DLC/DLF series, 2015 and later (Midea-built): Mode conflict (multi-zone) DLC4 / DLF4 series, 2013 to 2015 (Gree-built): Compressor current protection	Protection	DIY
P6	DLC/DLF series, 2015 and later (Midea-built): Outdoor low pressure protection DLC4 / DLF4 series, 2013 to 2015 (Gree-built): Communication error between inverter drive and main controller	Varies	DIY checks
dF	Defrost cycle running	Status	DIY
CL	Filter cleaning reminder	Status	DIY
AP	Wi-Fi pairing (access point) mode	Status	DIY
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
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
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

How Day & Night shows error codes

DLC/DLF series, 2015 and later (Midea-built): 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.

DLC4 / DLF4 series, 2013 to 2015 (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.

Brands built on the same platform

These brands share a code table with Day & Night because the same factory builds them, so their pages describe the same faults: ACiQ, AirEase, Arcoaire, Arctic King, Armstrong Air, Blueridge, Bosch, Bryant, Carrier, Comfortmaker, Concord, Cooper & Hunter, Della, Ducane.

Sources

ICP DLCSRA Outdoor Unit Single Zone Ductless Service Manual 32808000801 (error code table)
ICP ductless installation instructions IM-KSAIC04-04 (DLCPRA / DLCSRB / DLCERB / DLCLRA error codes)
ICP R-410A Ductless Split System Service Manual 421 01 9204 00 (DLC4 / DLF4, 2013)

Updated September 2026. Manufacturer site: www.dayandnightcomfort.com