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pipeline system.
7.2
Malfunction
Protection/Malfunction
Controller
display
Malfunction light
display on PCB
standby status
T1
OFF
running status
Show designed
temperature for
5s, then show T1
ON
Low ambient temperature protection PP0
☆☆☆☆
●
☆
●
Inlet water temperature sensor
failure
PP1
☆
●
Heating condenser sensor failure
PP3
☆☆☆
●
Ambient temperature sensor failure PP5
☆☆☆☆☆
●
Exhaust sensor failure
PP6
☆☆☆☆☆☆
●
Antifreeze protection in winter
PP7
☆☆☆
●
☆
●
Protection when heating temperature
is too hot
PP8
☆
●
☆
●
Function to prevent failure in high
temperature
HH
☆☆
●
☆
●
High pressure protection
EE1
☆☆☆☆☆☆
●
Low pressure protection
EE2
☆☆☆☆☆☆☆
●
Water flow failure
EE3
☆☆☆☆☆☆☆☆
●
Phase order protection
EE4
☆☆☆☆☆☆☆☆☆
●
