Econo CAM-20XB, Manual, Page: 25 / 27

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Temperature probe is
damaged
Replacement of the
corresponding temperature
probe
Circuit board
temperature probe is
not inserted well or
loose
Re-insert temperature probe
6 TH6
Sensor of tank temp.
malfunction
E6 Water
tank probe
error
Temperature probe is
damaged
Replacement of the
corresponding temperature
probe
Circuit board
temperature probe is
not inserted well or
loose
Re-insert temperature probe
7 TH7
Sensor of discharge
temp.1 malfunction
E7 System 1
exhaust
temperature
sensor fault Temperature probe is
damaged
Replacement of the
corresponding temperature
probe
Circuit board
temperature probe is
not inserted well or
loose
Re-insert temperature probe
8 TH8
Sensor of discharge
temp.2 malfunction
E8
Temperature probe is
damaged
Replacement of the
corresponding temperature
probe
Expansion valve
opening is too small
Adjust thermal expansion
valve opening larger
System has a leak
Refrigerant leak detection and
re-filling
9 Discharge temp.1 too high EB/EC
Temperature probe is
damaged(Resistance
produce changes)
Replacement of the
corresponding temperature
probe
9 / Antifreeze protection ED
In winter the ambient
temperature is too low
and the unit does not
turn the situation into
the freezing state.
Unit will enter the normal
freezing process
Power supply phase
missing
Check power supply
12 L1,L2,L3
Phase sequence
malfunction detection
F0 Phase
sequence
fault
detection
External power supply
phase sequence error
External power supply to
replace any of the three-phase
two-phase power supply
wiring
13 IN1
Comp.1 high voltage
switch malfunction
F1
Expansion valve
opening is too small
Adjust thermal expansion
valve opening larger