Table of Contents
ESIE13-02A
89 Water Heat Exchanger Frozen
3.2
89
User interface
display
Method of
The freeze-up protection control (operation halt) is activated during cooling operation according to the
malfunction
temperature detected by the hydro-box heat exchanger thermistor.
detection
Malfunction
Freeze-up protection:
decision conditions
When the hydro-box heat exchanger temperature is below 0°C during cooling operation.
Supposed causes
Troubleshooting
See also "Check No.4 - Resistance Conversion Table (Ambient, Coil, Fin)" on page 153.
Caution
Be sure to turn off power switch before connecting or disconnecting connector, otherwise parts may
be damaged.
Detection error due to faulty hydro-box heat exchanger thermistor.
Detection error due to faulty hydro-box PCB.
95
Error Codes: Hydro-box
Part 4 Troubleshooting
4
3
4
4
5
Chapters
Table of Contents
Troubleshooting
