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Heat pumps · Error codes

Ecoforest heat pump error codes

Ecoforest · A niche brand in the UK. 17 codes across 3 product families, each taken from the manufacturer’s manuals. Ecoforest technical support ↗

Find a Ecoforest engineer →17 codes · reviewed 23 September 2026

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Type the code on your display or a word from its meaning. Each code opens its own page with what it means, whether it is safe and what you can check.

17 codes

CodeMeaningStops?Homeowner check?
1
High discharge pressure
Not statedYes
2
Low suction pressure
Not statedYes
3
Low brine circuit pressure
Not statedYes
4
Low heating-cooling circuit pressure
Not statedYes
5
High discharge temperature
Not statedYes
6
High inverter temperature
Not statedYes
7
Low brine outlet temperature
Not statedYes
8
Low brine inlet temperature
Not statedYes
9
High heating outlet temperature
Not statedYes
10
Failure of any temperature probe (defective probe indicated on screen)
Not statedYes
11
Failure of any pressure transducer (defective transducer indicated on screen)
Not statedYes
12
Failure of any indoor th-Tune ambient terminal (defective terminal indicated on screen)
Not statedYes
13
Temperature reading failure in an indoor th-Tune terminal
Not statedYes
14
Humidity reading failure in an indoor th-Tune terminal
Not statedYes
15
Internal clock failure in an indoor th-Tune terminal
Not statedYes
16
Incorrect superheat degree
Not statedYes
G040
Connection failure between EASYNET GATEWAY and the ECOFOREST device.
NoYes