Additional Checks for Troubleshooting
ESIE13-02A
Part 4 Troubleshooting
154
3
1
4
5
Be careful when ordering spare part sensor for tank thermistor.
Thermistor
resistance check
Remove the connectors of the thermistors on the PCB, and measure the resistance of each thermistor
using tester.
The tank thermistor is for EKHWS-B and EKHWE domestic hot water tanks.
The relationship between normal temperature and resistance is shown in the graph and the table
below:
Tank thermistor for EHV*CA* domestic hot water tanks.
NTC-curve tank thermistor
Hydro-box
3SA48002
R25°C=20k
B=3990
-20
197.8 k
-15
148.2 k
-10
112.0 k
-5
85.52 k
0
65.84 k
5
51.05 k
10
39.91 k
15
31.44 k
20
24.95 k
25
19.94 k
30
16.04 k
35
12.99 k
40
10.58 k
45
8.669 k
50
7.143 k
T°C
Resistance value
-20
197.81 k
0
65.84 k
25
20 k
Summary of Contents for EHYHBH05AAV3
Page 16: ...Introduction ESIE13 02A 16 3 1 4 5...
Page 29: ...ESIE13 02A Functionality 29 Part 1 System Outline 3 1 4 5...
Page 30: ...Functionality ESIE13 02A Part 1 System Outline 30 3 1 1 4 5...
Page 35: ...ESIE13 02A Wiring Diagrams 35 Part 1 System Outline 3 1 4 5...
Page 36: ...Wiring Diagrams ESIE13 02A Part 1 System Outline 36 3 1 1 4 5...
Page 38: ...Wiring Diagrams ESIE13 02A Part 1 System Outline 38 3 1 1 4 5 3 3 Cable Dimensions...
Page 39: ...ESIE13 02A Wiring Diagrams 39 Part 1 System Outline 3 1 4 5...
Page 50: ...Outdoor Unit ESIE13 02A Part 2 Specifications 50 3 1 2 5...
Page 51: ...ESIE13 02A 51 Part 3 Commissioning 4 3 4 5 3 Part 3 Commissioning See Note on page 6...
Page 52: ...ESIE13 02A Part 3 Commissioning 52 3 1 3 5...
Page 98: ...Error Codes Hydro box ESIE13 02A Part 4 Troubleshooting 98 3 1 4 5 Troubleshooting...
Page 115: ...ESIE13 02A Error Codes Outdoor Units 115 Part 4 Troubleshooting 4 3 4 5 4 Troubleshooting...
Page 170: ...Maintenance Schedule ESIE13 02A Part 6 Maintenance 170 3 1 6...