Verified shared codeset

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DISPLAY codeset

HP300S2-F7 controller display

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

In the display order below, the held evidence set runs from Haier HP300S2-F7 to Haier HP300S2-F7; 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.

HaierHP300S2-F7

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 Communication of main control panel and display panel is abnormal.

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

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 over - current 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 U nder 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 over - current 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 HP300S2-F7 Heat Pump Water Heater Operation and Installation Manual. Retrieved 29 August 2026.

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