Panasonic S-80MW1E5 Service Manual & Test Run Service Manual page 24

16. Troubleshooting Guide
Alarm code
Alarm meaning
Alarm conditions
Possible Cause
Check
Alarm code
Alarm meaning
Alarm conditions
Possible Cause
2
Check
Alarm code
Alarm meaning
Alarm conditions
Possible Cause
Check
Alarm code
Alarm meaning
Alarm conditions
Possible Cause
Check
L13
Mismatched indoor unit
Software of outdoor unit is not corresponding to Air-to-Water module.
Software of 3WAY system (MF2) is old version.
Outdoor unit is not 3WAY system (MF2).
In case of 3WAY system (MF2), perform the version-up of software.
L16
Test run for water circuit is not finished.
Test run for water circuit is not finished.
Air purge mode and Pump speed setting is not performed or not finished.
Perform both Air purge mode and Pump speed setting.
L25
Unmatched remote controller
Unmatched remote controller is connected.
Unmatched remote controller is connected.
Check the remote controller. CZ-RTC5 or after version is corresponding.
P07
Abnormal Internal heater overload.
Overload protector of internal heater is active.
Faulty power supply connector connection.
Faulty connector connection.
Faulty overload protector of internal heater (OLP).
Faulty indoor unit PCB(main).
Faulty Heater relay
Faulty Water outlet sensor 2
Check the failure of magnetic relay of internal heater. Welded or not.
Check the external device state. If water temperature is reach to about 70˚C, overload
protector will be active.
* After solving the problem, be sure to reset the alarm by remote controller. (Refer to
Installation instructions)
(No display icon of internal heater abnormal)
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Air-to-Water Indoor Unit