Flow Switch; Force Heater Mode Operation; Mono Bloc Unit Safety; Auto Restart Control - Panasonic WH-MDC09C3E8 Service Manual

12.4

Flow Switch

12.4.1 Flow Switch Control
1 The water flow switch serve as an overload protector that shuts down the unit when the water level is
detected to be low.
2 Detection is Lo (0V) when there is no water flow, and detection is Hi (5V) when there is water flow.
12.5

Force Heater Mode Operation

The backup heater also serves as backup in case of malfunctioning of the Mono bloc unit.
1 Make sure the OFF/ON control panel LED is OFF (no operation).
2 Press the Force button to start the force heater mode operation.
3 During force heater mode, all other operations are not allowed.
4 Press OFF/ON button to stop the force heater mode operation.
12.6

Mono Bloc Unit Safety

12.6.1 Mono Bloc Unit Safety Control
1 When water pump is ON, the system will start checking flow switch status (ON/OFF).
2 If the flow switch ON for 10 seconds, the system will check on the water inlet temperature for 10 seconds.
If the water inlet temperature not exceeds 80°C, the water pump shall be continuously running with normal
mode.
If the water inlet temperature exceeds 80°C for continuously 10 seconds, the water pump will be OFF
immediately.
3 After water pump OFF for more than 10 minutes, it will be ON back and the Mono bloc unit safety control
checking is restarted.
12.7

Auto Restart Control

1 When the power supply is cut off during the operation of Mono bloc unit, the compressor will re-operate after
power supply resumes.
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