Panasonic WH-SXF12D6E5, Service Manual

Page: 54 / 120

54
12.8. Indication Panel
Note:
• If Operation LED is blinking, there is an abnormality operation occurs.
12.9. Indoor Back-Up Heater Control
12.9.1. Indoor Electric Heater control
1. Normal Heating Mode
• Heater On condition:
a. Heater switch is ON
b. After Heatpump 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 tempe
[-8 C ]
f. [20] minutes since previous Backup heater Off
* When heatpump 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 tempe [+2 C] for continuous 15 secs OR
b. When water out temp> water set tempe [-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 tempe [-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 tempe [-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 Operation
Color Green
Light ON Operation ON
Light OFF Operation OFF