Ecoplus SWBC-19.5H-B-S Installation Instructions Manual page 12

Ⅵ.Operation introductions
3) Malfunction data
S/N
Malfunctions
1
Communication failure
2
Water tank sensor failure
3
Ambient temp sensor failure
4
Coil temp sensor failure
5
Exhaust temp sensor failure
6
Gas suction temp sensor failure
7
Water inlet temp sensor failure
8
Water flow switch protection
9
High pressure protection ( 3 times within 1 hour)
10
Low pressure protection ( 3times within 1 hour)
11
Exhaust temp too high protection
12
High pressure protection
13
Low pressure protection
14
Anti-Freezing protection
15
Phase order failure
10
Water heater
Code
Solution
E10
P6
P5
P3
P4
P9
P2
E3
E1
E2
P8
E4
E5
Turn on for heating
P7
E9