Panasonic WH-MXF09D3E8 Service Manual

Also see for WH-MXF09D3E8: Design handbook Installation manual Installation manual Operating instructions Operating instructions

Contents

Panasonic WH-MXF09D3E8 Service Manual Manual pdf 58 page image

5812.9 Back-Up Heater Control12.9.1 Electric Heater Control1 Normal Heating Modeo Heater On condition:a. Heater switch is ONb. After Heatpump thermo ON for [30] minsc. After water pump operate [9] minsd. Outdoor air temperature < Outdoor set temperature for heatere. [20] minutes since previous Backup heater Off* When heatpump cannot operate due to error happens during normal operation, heater will go intoforce mode automatic* Heater need to operate during deice operationf. When water outlet temperature < Water set temperature + [-8°C] (check water out temperaturebefore ON heater 3 and check also water out temperature after heater delay timer before ON heater2 and 1)o Heater Stop Condition:a. When outdoor set temperature > outdoor set temperature + [+2°C] for continuous 15 secs ORb. When water out temp> water set temperature + [-2°C] for continuous 15 secs ORc. Heater switch is Off ORd. Heat pump thermo-off or OFF condition2 Force Heater Modeo Heater On Condition:a. After water pump operate [9] minsb. When water outlet temperature < water set temperature + [-8°C]c. [20] minutes since previous Backup heater Offo Heater Stop conditiona. Force mode off ORb. When water outlet temperature > water set temperature + [-2°C] for continuous 15 secs* Do not operate heater at the following situation1 Water outlet temperature sensor, and water inlet sensor abnormal2 Flow switch abnormal3 Circulation pump stop condition4 During Heatpump switch to tank side12.10 Tank Booster Heater Control12.10.1 Tank Booster Heater ControlHeating operation condition:1 Booster heater Turn On condition:o After BOOSTER HEATER DELAY TIMER fulfill during heat pump startup time in tank mode, or duringswitching from heating heat-up interval to tank heat-up interval in heat + tank mode (heating priority notset).o Tank temperature < Tank set temperature + [-7°C],o 20 minutes since previous heater off.* BOOSTER HEATER DELAY TIMER is clear when tank heat-up interval end.