Verified shared codeset

Every result below passed dual extraction agreement and source-anchor checks.

DISPLAY codeset

Monoblock controller display

28 documented fault codes, shared only by the compatible models listed here.

In the display order below, the held evidence set runs from Haier HP200M1-U1 to Haier HP330M1U1; its published labels start with E1 and end with PF. The source and each model-mapping record remain visible on this page.

Compatible models

This result is published only for the models explicitly covered by the source evidence.

HaierHP200M1-U1
HaierHP200M1U1P
HaierHP250M1-U1
HaierHP250M1U1P
HaierHP330M1U1

Published codes

Fault code

E1

Red — urgent safety concern

Red means the documented fault involves safety-critical, leak, electrical, refrigerant, lockout or overheat language.

Documented as Electricity leakage alarming.

A licensed technician confirms the actual cause.

View the canonical E1 result

Fault code

E2

Amber — service attention

Amber means the fault needs attention; contact the manufacturer or a licensed technician if it persists.

Documented as Over temperature alarming.

A licensed technician confirms the actual cause.

View the canonical E2 result

Fault code

E3

Amber — service attention

Amber means the fault needs attention; contact the manufacturer or a licensed technician if it persists.

Documented as Fault of the inner temperature sensor.

A licensed technician confirms the actual cause.

View the canonical E3 result

Fault code

E4

Amber — service attention

Amber means the fault needs attention; contact the manufacturer or a licensed technician if it persists.

Documented as Fault of the ambient temperature sensor.

A licensed technician confirms the actual cause.

View the canonical E4 result

Fault code

E5

Amber — service attention

Amber means the fault needs attention; contact the manufacturer or a licensed technician if it persists.

Documented as Fault of the evaporation temperature sensor.

A licensed technician confirms the actual cause.

View the canonical E5 result

Fault code

E6

Amber — service attention

Amber means the fault needs attention; contact the manufacturer or a licensed technician if it persists.

Documented as Fault of the air-exhaust temperature sensor.

A licensed technician confirms the actual cause.

View the canonical E6 result

Fault code

E7

Amber — service attention

Amber means the fault needs attention; contact the manufacturer or a licensed technician if it persists.

Documented as Abnormal communication of main control panel and display panel.

A licensed technician confirms the actual cause.

View the canonical E7 result

Fault code

E8

Amber — service attention

Amber means the fault needs attention; contact the manufacturer or a licensed technician if it persists.

Documented as Pressure switch protection.

A licensed technician confirms the actual cause.

View the canonical E8 result

Fault code

E9

Amber — service attention

Amber means the fault needs attention; contact the manufacturer or a licensed technician if it persists.

Documented as Ambient temperature protection.

A licensed technician confirms the actual cause.

View the canonical E9 result

Fault code

ED

Amber — service attention

Amber means the fault needs attention; contact the manufacturer or a licensed technician if it persists.

Documented as Fault of the air intake temperature sensor.

A licensed technician confirms the actual cause.

View the canonical ED result

Fault code

EF

Amber — service attention

Amber means the fault needs attention; contact the manufacturer or a licensed technician if it persists.

Documented as Fault of the Off-peak power switching signal.

A licensed technician confirms the actual cause.

View the canonical EF result

Fault code

F0

Amber — service attention

Amber means the fault needs attention; contact the manufacturer or a licensed technician if it persists.

Documented as Communication failure between Wi-Fi module and control board.

A licensed technician confirms the actual cause.

View the canonical F0 result

Fault code

F2

Amber — service attention

Amber means the fault needs attention; contact the manufacturer or a licensed technician if it persists.

Documented as Operating temperature protection.

A licensed technician confirms the actual cause.

View the canonical F2 result

Fault code

F3

Amber — service attention

Amber means the fault needs attention; contact the manufacturer or a licensed technician if it persists.

Documented as Air exhaust temperature protection.

A licensed technician confirms the actual cause.

View the canonical F3 result

Fault code

F5

Amber — service attention

Amber means the fault needs attention; contact the manufacturer or a licensed technician if it persists.

Documented as Evaporation high temperature protection.

A licensed technician confirms the actual cause.

View the canonical F5 result

Fault code

F6

Amber — service attention

Amber means the fault needs attention; contact the manufacturer or a licensed technician if it persists.

Documented as Compressor over-current protection.

A licensed technician confirms the actual cause.

View the canonical F6 result

Fault code

L7

Amber — service attention

Amber means the fault needs attention; contact the manufacturer or a licensed technician if it persists.

Documented as Fault of the fan.

A licensed technician confirms the actual cause.

View the canonical L7 result

Fault code

P1

Amber — service attention

Amber means the fault needs attention; contact the manufacturer or a licensed technician if it persists.

Documented as Transient hardware overcurrent of the compressor phase current.

A licensed technician confirms the actual cause.

View the canonical P1 result

Fault code

P2

Amber — service attention

Amber means the fault needs attention; contact the manufacturer or a licensed technician if it persists.

Documented as Compressor phase current software transient overcurrent.

A licensed technician confirms the actual cause.

View the canonical P2 result

Fault code

P3

Amber — service attention

Amber means the fault needs attention; contact the manufacturer or a licensed technician if it persists.

Documented as The heat sink (IPM) temperature is too high.

A licensed technician confirms the actual cause.

View the canonical P3 result

Fault code

P4

Amber — service attention

Amber means the fault needs attention; contact the manufacturer or a licensed technician if it persists.

Documented as Input overflow load.

A licensed technician confirms the actual cause.

View the canonical P4 result

Fault code

P5

Amber — service attention

Amber means the fault needs attention; contact the manufacturer or a licensed technician if it persists.

Documented as Under voltage protection.

A licensed technician confirms the actual cause.

View the canonical P5 result

Fault code

P6

Amber — service attention

Amber means the fault needs attention; contact the manufacturer or a licensed technician if it persists.

Documented as Over voltage protection.

A licensed technician confirms the actual cause.

View the canonical P6 result

Fault code

P7

Amber — service attention

Amber means the fault needs attention; contact the manufacturer or a licensed technician if it persists.

Documented as The communication between the main control chip and the driver chip is abnormal.

A licensed technician confirms the actual cause.

View the canonical P7 result

Fault code

P8

Amber — service attention

Amber means the fault needs attention; contact the manufacturer or a licensed technician if it persists.

Documented as The current detection on the frequency conversion side is abnormal.

A licensed technician confirms the actual cause.

View the canonical P8 result

Fault code

PB

Amber — service attention

Amber means the fault needs attention; contact the manufacturer or a licensed technician if it persists.

Documented as Compressor out of step.

A licensed technician confirms the actual cause.

View the canonical PB result

Fault code

PD

Amber — service attention

Amber means the fault needs attention; contact the manufacturer or a licensed technician if it persists.

Documented as Instantaneous software overflow on the rectifier Side.

A licensed technician confirms the actual cause.

View the canonical PD result

Fault code

PF

Amber — service attention

Amber means the fault needs attention; contact the manufacturer or a licensed technician if it persists.

Documented as Transient hardware overcurrent on the rectifier side.

A licensed technician confirms the actual cause.

View the canonical PF result

Official source

Where this result comes from

Haier. Haier Monoblock Heat Pump Water Heater Operation and Installation Manual V1125. Retrieved 29 August 2026.

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