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ESIE06-03
Error Codes: Outdoor Units
3–19
3
3
4
5
1
3.7
“EA”
Four Way Valve Abnormality
Error code
EA
Method of
malfunction
detection
The indoor air temperature thermistor, the hydro-box heat exchanger thermistor, the outdoor
temperature thermistor and the outdoor unit heat exchanger thermistor are checked to see if they
function within their normal ranges in the operating mode.
Malfunction
decision conditions
A following condition continues over 10 minute after operating 5 minutes.
P
Cooling
(Outlet water temperature – hydro-box heat exchanger temperature) < -10°C
P
Heating
(Hydro-box heat exchanger temperature – Outlet water temperature) < -10°C
Supposed causes
P
Connector in poor contact
P
Thermistor defective
P
Outdoor unit PCB defective
P
Four way valve coil or harness defective
P
Four way valve defective
P
Foreign substance mixed in refrigerant
P
Insufficient gas
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 ...