Verified shared codeset

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DISPLAY codeset

Split System Pro wired controller display

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

In the display order below, the held evidence set runs from Emerald Energy HPRX300E-1 to Emerald Energy HPRX300E-1; its published labels start with bb and end with PA. 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.

Emerald EnergyHPRX300E-1

Published codes

Fault code

bb

Amber — service attention

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

Documented as Low heat pump capacity.

A licensed technician confirms the actual cause.

View the canonical bb result

Fault code

C7

Amber — service attention

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

Documented as High temperature protection of inverter module.

A licensed technician confirms the actual cause.

View the canonical C7 result

Fault code

CH

Amber — service attention

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

Documented as Over load protection of E-heater ( 16 A).

A licensed technician confirms the actual cause.

View the canonical CH result

Fault code

E0

Amber — service attention

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

Documented as There is not enough water in the water tank.

A licensed technician confirms the actual cause.

View the canonical E0 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 Communication malfunction between controller and main control board.

A licensed technician confirms the actual cause.

View the canonical E2 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 Water tank temperature sensor error (T5L).

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 ODU heat exchanger temperature sensor error (T3).

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 ODU ambient temperature sensor error (T4).

A licensed technician confirms the actual cause.

View the canonical E6 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 E0 protection continuously occurs three times.

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 Suction temperature sensor error (Th).

A licensed technician confirms the actual cause.

View the canonical E9 result

Fault code

EA

Amber — service attention

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

Documented as Discharge temperature sensor error (Tp).

A licensed technician confirms the actual cause.

View the canonical EA result

Fault code

EE

Amber — service attention

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

Documented as EEPROM chip error.

A licensed technician confirms the actual cause.

View the canonical EE 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 Clock chip error.

A licensed technician confirms the actual cause.

View the canonical EF result

Fault code

EP

Red — urgent safety concern

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

Documented as Leakage error of e-heater.

A licensed technician confirms the actual cause.

View the canonical EP result

Fault code

F1

Amber — service attention

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

Documented as DC bus low voltage protection.

A licensed technician confirms the actual cause.

View the canonical F1 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 Low super-heat of discharge protection.

A licensed technician confirms the actual cause.

View the canonical F2 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 Electric expansion valve joint fault.

A licensed technician confirms the actual cause.

View the canonical F6 result

Fault code

H1

Amber — service attention

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

Documented as Communication malfunction between main control board and inverter board.

A licensed technician confirms the actual cause.

View the canonical H1 result

Fault code

H4

Amber — service attention

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

Documented as Three times L0 protect.

A licensed technician confirms the actual cause.

View the canonical H4 result

Fault code

H6

Amber — service attention

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

Documented as The DC fan motor malfunction.

A licensed technician confirms the actual cause.

View the canonical H6 result

Fault code

H7

Amber — service attention

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

Documented as Voltage protection.

A licensed technician confirms the actual cause.

View the canonical H7 result

Fault code

HC

Amber — service attention

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

Documented as E-heater error (Current is less than 2 A when e - heater operating).

A licensed technician confirms the actual cause.

View the canonical HC result

Fault code

HF

Amber — service attention

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

Documented as Inverter module board EEPROM malfunction.

A licensed technician confirms the actual cause.

View the canonical HF result

Fault code

HH

Amber — service attention

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

Documented as 10 times H6 in 2 hours.

A licensed technician confirms the actual cause.

View the canonical HH result

Fault code

HP

Amber — service attention

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

Documented as Smart Grid signal error.

A licensed technician confirms the actual cause.

View the canonical HP result

Fault code

L0

Amber — service attention

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

Documented as IPM module over current or weak magnetic protection.

A licensed technician confirms the actual cause.

View the canonical L0 result

Fault code

L1

Amber — service attention

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

Documented as Module or winding high temperature protection.

A licensed technician confirms the actual cause.

View the canonical L1 result

Fault code

L2

Amber — service attention

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

Documented as Bus voltage protection or missing phase.

A licensed technician confirms the actual cause.

View the canonical L2 result

Fault code

L3

Amber — service attention

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

Documented as EEPROM 337J Fault Protection.

A licensed technician confirms the actual cause.

View the canonical L3 result

Fault code

L4

Amber — service attention

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

Documented as Out of step, Zero speed protection and so on.

A licensed technician confirms the actual cause.

View the canonical L4 result

Fault code

L5

Amber — service attention

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

Documented as Phase loss, short circuit to ground, motor winding, inductance and other abnormal protection.

A licensed technician confirms the actual cause.

View the canonical L5 result

Fault code

LA

Amber — service attention

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

Documented as Phase loss, short circuit to ground, motor winding, inductance and other abnormal protection.

A licensed technician confirms the actual cause.

View the canonical LA result

Fault code

Lb

Amber — service attention

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

Documented as PFC protection.

A licensed technician confirms the actual cause.

View the canonical Lb result

Fault code

P0

Amber — service attention

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

Documented as System low pressure protection (low pressure switch ).

A licensed technician confirms the actual cause.

View the canonical P0 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 System high pressure protection (high pressure switch ).

A licensed technician confirms the actual cause.

View the canonical P1 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 Over load protection of inverter compressor.

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 High discharge temperature (Tp) protection.

A licensed technician confirms the actual cause.

View the canonical P4 result

Fault code

PA

Amber — service attention

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

Documented as Low water temperature protection.

A licensed technician confirms the actual cause.

View the canonical PA result

Official source

Where this result comes from

Emerald Energy. Emerald Heat Pump Split System HPRX300E-1 Instructions. Retrieved 29 August 2026.

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