28
14 Troubleshooting Guide
14.1. Error Codes Table
Item code
Display
Abnormality detection
condition
Detection period
Operation when
abnormal
Cancel condition
Tank no water
abnormality
H96
Confirm tank is empty by empty
boiling detection sequence
After ON the operation
SW, when heater is
power ON for first time.
Total stops
Operate error reset SW
Heater 1 overheat
detection [H1 operation
detection]
H91
When Heater 1 power on,
confirm no power supply to
Heater 1 for continuous 10sec.
When Heater 1 power
on
Heater 1 OFF
Operate error reset SW
Heater 2 overheat
detection [H1 operation
detection]
H71
When Heater 2 power on,
confirm no power supply to
Heater 1 for continuous 10sec.
When Heater 2 power
on
Heater 2 OFF
Operate error reset SW
TH1 disconnected/short
circuit (Tank Top)
F31
AD value is in highest 3 bit OR
lowest 3 bit
Always (Detection time:
5sec.)
(recovery time: 5sec.)
Normal operation
(Heater 1 is OFF)
AD value return to the
normal range
TH2 disconnected/short
circuit (Heater Top)
H72
AD value is in highest 3 bit OR
lowest 3 bit
Always (Detection time:
5sec.)
(recovery time: 5sec.)
Normal operation
(Heater 1 is OFF)
AD value return to the
normal range
TH3 disconnected/short
circuit (Tank Bottom)
F38
AD value is in highest 3 bit OR
lowest 3 bit
Always (Detection time:
5sec.)
(recovery time: 5sec.)
Normal operation
AD value return to the
normal range
TH4 disconnected/short
circuit ((Heater Bottom)
H32
AD value is in highest 3 bit OR
lowest 3 bit
Always (Detection time:
5sec.)
(recovery time: 5sec.)
Normal operation
(Heater 2 is OFF)
AD value return to the
normal range
TH5 (hot water supply
TH) disconnected/short
circuit
H34
AD value is in highest 6 bit OR
lowest 6 bit (9 bit detection)
Always (Detection time:
5sec.)
(recovery time: 5sec.)
Stop hot water supply
operation (Close flow
adjust valve to full
position, stop hot water
supply pump).
AD value return to the
normal range
TH8 (hot water return
TH) disconnected/short
circuit
H45
AD value is in highest 3 bit OR
lowest 3 bit
Always (Detection time:
5sec.)
(recovery time: 5sec.)
Normal operation
AD value return to the
normal range
TH7 (heating return TH)
disconnected/short
circuit
H50
AD value is in highest 3 bit OR
lowest 3 bit
Always (Detection time:
5sec.)
(recovery time: 5sec.)
Normal operation
AD value return to the
normal range
TH6 (O/D air temp TH)
disconnected/short
circuit
H80
AD value is in highest 3 bit OR
lowest 3 bit
Always (Detection time:
5sec.)
(recovery time: 5sec.)
Normal operation
(Operate as outdoor air
temp -15
q
C)
AD value return to the
normal range
TH9 (hot water supply
sub TH) disconnected/
short circuit
H89
AD value is in highest 6 bit OR
lowest 6 bit (9 bit detection)
Always (Detection time:
5sec.)
(recovery time: 5sec.)
Stop hot water supply
operation (Close flow
adjust valve to full
position, stop hot water
supply pump).
AD value return to the
normal range
Hot water supply TH
temperature abnormal
H81
TH5 (hot water TH) converted
temp - TH9 (hot water supply
sub TH) converted temperature
t
8k
During hot water supply
(Detection time: 10sec.)
Abnormal display
* Hot water supply flow
adjust valve operates as
normal
When hot water supply
control end, restore
automatically. Cancel by
operate error reset SW.
Cancel by reset power
TH9 (hot water supply sub TH)
converted temp - TH5 (hot
water TH) converted
temperature
t
8k
During hot water supply
(Detection time: 10sec.)
Stop hot water supply
operation (Close flow
adjust valve to full
position, stop hot water
supply pump)
Cancel by reset power
* Abnormal is not
cancelled by operate
remote control switch
Summary of Contents for WH-TX30B9E8
Page 7: ...7 4 Location of Controls and Components 4 1 Tank Unit 4 1 1 Location of Control ...
Page 8: ...8 4 1 2 Main Components ...
Page 9: ...9 5 Dimensions ...
Page 10: ...10 6 Water Cycle Diagram ...
Page 11: ...11 7 Wiring Connection Diagram ...
Page 12: ...12 8 Electronic Circuit Diagram 8 1 Indoor Unit ...
Page 13: ...13 9 Printed Circuit Board 9 1 Tank Unit 9 1 1 Main Printed Circuit Board ...
Page 14: ...14 9 1 2 Surge Printed Circuit Board ...
Page 47: ...47 15 2 Heater Removal Procedures ...
Page 48: ...48 15 3 Main Printed Board Removal Procedures ...
Page 49: ...49 15 4 Control Board Removal Procedure ...
Page 50: ...50 15 5 Pressure Relief Valve Procedures ...
Page 51: ...51 15 6 Flow Switch Removal Procedures 15 7 Water Pump Removal Procedures ...
Page 52: ...52 16 Technical Data 16 1 Pump Characteristic 16 2 Water Tank Sensor Characteristic ...
Page 53: ...53 ...
Page 54: ...54 ...