Troubleshooting
ESIE06-03
3–6
3
1
3
4
5
1.4
Overview of Error Codes
Malfunction code
Malfunction contents
See page
Hydro-
box
80
Inlet water temperature thermistor abnormality
81
Outlet water temperature thermistor abnormality
89
Water heat exchanger freez-up abnormality
??
7H
Flow abnormality
??
8H
Outlet water temperature too high
??
AA
Booster heater thermal protector is open
??
A1
Hydro-box PCB abnormality
A5
Freez-up protection or High pressure control
C0
Flow switch abnormality
??
C4
Heat exchanger thermistor abnormality
EC
Sanitary water temperature too high
??
HC
Sanitary water temperature thermistor abnormality
Ou
td
o
o
r U
n
it
E1
Outdoor unit PCB abnormality
E5
OL Activation (compressor overload)
E6
Compressor lock
E7
DC fan lock
E8
Input over current
EA
Heating / Cooling switching failure
F3
Discharge pipe temperature control
F6
Too high condensing pressure
H0
Sensor abnormailty
H6
Compressor start up failure
H8
CT or related abnormailty
H9
Outdoor temperature thermistor or related abnormality
J3
Discharge pipe thermistor failure
J6
Heat exchanger thermistor or related abnormality
P4
Radiation fin thermistor or related abnormality
L3
Switch box temperature rize
L4
Radiation fin (power transistor) temperature rize
L5
Output over current (inverter PCB)
Syste
m
m
a
lfu
n
cti
ons
U0
Refrigerant failure
U2
Low-voltage or over-voltage detection
U4
Signal transmission error (indoor outdoor unit)
U7
Signal transmission error (indoor outdoor unit)
UA
Combination error (indoor outdoor unit) or spare parts PCB
??
Summary of Contents for Altherma EKHBH Series
Page 2: ...ESIE06 03 1 2 Part 1 System Outline 3 1 1 5 ...
Page 26: ...Functional Diagrams ESIE06 03 1 26 Part 1 System Outline 3 1 1 4 5 ...
Page 32: ...Piping Diagrams ESIE06 03 1 32 Part 1 System Outline 3 1 1 4 5 ...
Page 38: ...Switch Box Layout ESIE06 03 1 38 Part 1 System Outline 3 1 1 4 5 ...
Page 58: ...PCB Layout ESIE06 03 1 58 Part 1 System Outline 3 1 1 4 5 ...
Page 60: ...ESIE06 03 2 2 Part 2 Functional Description 3 1 2 5 ...
Page 68: ...Hydro box Functional Concept ESIE06 03 2 10 Part 2 Functional Description 3 1 2 4 5 ...
Page 88: ...ESIE06 03 3 2 Part 3 Troubleshooting 3 1 3 5 ...
Page 134: ...Error Codes System Malfunctions ESIE06 03 3 48 Part 3 Troubleshooting 3 1 3 4 5 ...
Page 152: ...Additional Checks for Troubleshooting ESIE06 03 3 66 Part 3 Troubleshooting 3 1 3 4 5 ...
Page 154: ...ESIE06 03 5 2 Part 5 Disassembly and Maintenance 3 1 5 ...