Panasonic WH-SXC09H3E8

124
12.10 Force Heater Mode
Purpose:
- As a backup heat source when heat pump error. Force heater Mode only control backup heater to heat up
the room circuit only.
Start condition:
- Force heater request ON by user during error AND
(Force Heater mode can be operate regardless of mode selection, but indoor force remote control run heat
mode)
- During Error Happen (exclude the error list below)
Error List which not allow Force Heater operation
H12 Capacity Mismatch H95 Abnormal Voltage Connection
H75 Abnormal Low Water Temperature H70 Abnormal Back-up Heater OLP
H20 Abnormal Water Pump F37 Abnormal Water Inlet sensor
H76 Indoor-Remote Controller Communication Error H74 PCB Communication Error
H62 Abnormal Water Flow F45 Abnormal Water Outlet sensor
Stop condition:
- Force Heater request OFF OR
- Operation OFF request OR
- Mode change request OR
- Power reset OR
- Error of above list happens during force heater operation.
Control contents:
1) When force heater mode start condition fulfilled, turn ON water pump and turn ON room heater follow below
control.
2) Operate the 3 ways valve at room side only and turn ON 2 ways valve as heat mode operation.
3) Turn ON the zone pump and mixing valve if system select 2 zone systems or Buffer tank connect YES,
control according to normal zone pump and mixing valve control.
4) When Force heater mode stop condition fulfilled, turn OFF heater as below condition and turn OFF water
pump after pump delay time.
Room heater ON condition:
a) When Force Heater Control start condition fulfill AND
b) After water pump operate 1.2 minutes AND
c) When water outlet temperature < water set temperature + [-8°C] AND
d) 20 minutes since previous Backup heater Off
Room heater Stop condition:
a) Force mode off OR
b) Operation off OR
c) When water outlet temperature > water set temperature + [-2°C] for continuous 15 seconds.
* ON/OFF follow normal heater sequence.
** Do not operate room heater at the following situation:
a) Water outlet temperature sensor and water inlet sensor abnormal.
b) Water Flowrate abnormal detect.
c) Circulation pump stop condition.