GRE HPGI50 Manuel D'instructions page 78

Remarks:
1. In heating mode, if the water out temperature is higher than the set temperature over 7℃, LED
controller displays EE04 for water over-heating protection.
EE04 Water Overheating Protection
For example as below:
Output water Set point
Mode Condition Malfunction
temperature temperature
EE04 Overheating protection for
Heating mode 36℃ 29℃ Tout -Tset ≧7℃
water temperature (d2- TH5)
76