Flow Switch; Force Heater Mode Operation; Indication Panel; Back-Up Heater Control - Panasonic WH-MXF09D3E8 Service Manual

12.8 Indication Panel

Note:
•
If Operation LED is blinking, there is an abnormality operation occurs.

12.9 Back-Up Heater Control

12.9.1 Electric Heater control
1. Normal Heating Mode
•
Heater On condition:
a. Heater switch is ON
b. After Heat pump thermo ON for [30] mins
c. After water pump operate [9] mins
d. Outdoor air temperature < Outdoor set temperature for heater
e. When water outlet temperature < Water set temperature + [-8°C]
f. [20] minutes since previous Backup heater Off
* When heat pump cannot operate due to error happens during normal operation, heater will go into
force mode automatic
* Heater need to operate during deice operation
•
Heater Stop Condition:
a. When outdoor set temperature > outdoor set temperature + [+2°C] for continuous 15 secs OR
b. When water out temp> water set temperature + [-2°C] for continuous 15 secs OR
c. Heater switch is Off OR
d. Heat pump thermo-off or OFF condition
2. Force Heater Mode
•
Heater On Condition:
a. After water pump operate [9] mins
b. When water outlet temperature < water set temperature + [-8°C]
c. [20] minutes since previous Backup heater Off
•
Heater Stop condition
a. Force mode off OR
b. When water outlet temperature > water set temperature + [-2°C] for continuous 15 secs
* Do not operate heater at the following situation
1. Water outlet temperature sensor, and water inlet sensor abnormal
2. Flow switch abnormal
3. Circulation pump stop condition
4. During Heat pump switch to tank side
LED
Color
Light ON
Light OFF
53
Operation
Green
Operation ON
Operation OFF