Aqua PRO ECO550 Installation And User Manual - Page 18
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Failure code
NO.
Display
1
E1
2
E2
3
E3
4
E4
5
E5
6
E6
7
E7
8
E8
9
EA
10
Eb
11
Ed
12
P0
13
P1
14
P2
15
P3
16
P4
17
P5
18
P6
19
P7
20
P8
21
P9
22
PA
23
F1
High pressure protection
Low pressure protection
No water protection (not failure)
3 phase sequence protection (three phase only)
Not failure, power supply excesses operation range
Excessive temp difference between inlet and outlet
water(Insufficient water flow protection)
Water outlet temp too high or too low protection
High exhaust temp protection
coil pipe(heat exchanger)overheat protection
Ambient temperature too high or too low protection
Anti-freezing reminder (not failure )
Controller communication failure
Water inlet temp sensor failure
Water outlet temp sensor failure
Gas exhaust temp sensor failure
coil pipe (heat exchanger) temp sensor failure
Gas return temp sensor failure
Heating coil pipe (evaporator) temp sensor failure
Ambient temp sensor failure
Heat dissipation device temp sensor failure
Current sensor failure
Restart memory failure
Compressor drive module failure
Failure description
17