Skyline Energy SX-20BZA, Installation Manual, Page: 47 / 51

◆
This error can recover automatically.
◆
When this error happen, operating panel will alarm, and display Er:03.
15. Compressor current is too small or too large protection
◆
6 seconds after compressor start, detect compressor current, if current
≤
1A and lasts for 6sec,
or current
≥
L8 and lasts for 6sec, system will stop working to protect.
◆
When this error happen, operating panel will alarm, and display Er:35.
16. Ambient temperature too low protection
◆
When ambient temperature <H2, compressor and fan motor will stop working. Hot water tank
electric heater will start.
◆
When this error happen, operating panel will alarm, and display Er:44.
◆
When ambient temperature
＞
H2+2, quit the protection, compressor and fan motor start, hot
water tank electric heater will work according to normal condition.
17. Anti-freeze protection in winter
◆
Under standby or power off state, when ambient temperature <2
℃
, enter 1
st
step anti-freeze
protection, circulating water pump will start to work for 5minutes per 40min. When outlet water
temperature
≤
4
℃
, circulating water pump needn’t wait for 40min, can start water pump at once.
◆
Under standby or power off state, When ambient temperature <2
℃
and hot water tank
temperature
≤
4
℃
, enter 2
nd
step anti-freeze protection, heat pump will start to heat. When hot
water tank temperature
≥
15
℃
, stop heating, or when ambient temperature
≥
8
℃
, system will quit
the 2
nd
step anti-freeze.
◆
At the process of anti-freeze, if detect outlet water temperature
≤
2
℃
, LCD show error code
Er:04, when detect outlet water temperature
≥
4
℃
, quit the error, this error only display, no other
function.
◆
If there is hot water tank temp sensor error, entering 1
st
step anti-freeze will be only according
to ambient temperature, and only 1
st
step anti-freeze is valid.
◆
If there is ambient temperature sensor error, enter 1
st
step anti-freeze protection, when hot
water tank temperature
≤
4
℃
, enter 2
nd
step anti-freeze protection.