Skyline Energy SX-20BZA, Installation Manual, Page: 41 / 51

◆
When system request power on, water pump start at once
；
◆
When system request power off
，
water pump delay 30s to stop after compressor stop
；
◆
When defrost, water pump doesn’t stop.
4. Fan motor
◆
after water pump worked for 30s, fan motor start
；
When heat pump powers off, fan motor and
compressor stop at the same time.
◆
When defrosting, fan motor doesn’t work, refer to defrosting process.
5. Auxiliary electric heater
5.1 Starting conditions
：
◆
At heating mode
◆
Ambient temperature
≤
L5 setting.
◆
Water tank temperature < water tank preset temperature - L2.
◆
Low level switch connects.
When all of above conditions are met, electric heater starts.
5.2 Stopping conditions:
◆
Water tank temp
≥
water tank preset temp when heating.
◆
Water tank temp sensor damaged and controller show error code.
◆
Ambient temp
≥
parameter L5+2
℃
；
◆
Water level switch has error
◆
Low level switch disconnects
Any of above condition is met, electric heater stops.
5.3 When defrosting, forced defrosting, secondary anti-freeze, electric heater is forced to start.
5.4 Except there is water level error, hot water tank temp sensor error, when there is other temp
error, high and low pressure error protection, electric heater will start.