
7.Malfunction Display / System Protection
If screen show EE 3 as Fig.7,means
malfunction for water flow switch,
Malfunction code see below:
Protection/Malfunction
Water inlet temp sensor failure
Water outlet temp sensor failure
System 1
coil
temp
sensor failure
System 2
coil
temp
sensor failure
System 1
Air circulatio temp sensor failure
System 2
air circulatio temp sensor failure
PP 1
PP 2
PP 3
PP 6
PP 4
Fig.7
LCD display
Ambient
sensor failure
temp
System 1 air exhaust temp sensor failure
System 1 air exhaust too high protect
System 2 air exhaust temp sensor failure
System 2 air exhaust too high protect
PP 5
PP 8
PP 9
EE 1
EE 5
EE 2
EE 6
EE 3
EE 4
EE 8
PP 11
PP 10
PP 12
PP 13
Note: some heat pump do not have the indicating light.
st
Winter 1 antifreeze protect
nd
Winter 2 antifreeze protect
System 1 gas high pressure protect
System 2 gas high pressure protect
System 1 gas low pressure protect
System 2 gas low pressure protect
Water flow switch failure
Defrost
Power source wrong/open phase
Communication failure
PP 7
PP 7
Exhaust air temperature too high protect
10
Ⅵ
.Operation introductions
Water heater
Blinks