Winter antifreeze
protection under standby
status
Outdoor temperature
lower than 0℃
Unit automatically starts antifreeze protection.
Please leave it on standby without power cut-off.
Electric heating overheating
protection
Electric heating overheating
protection switch off
1、Check the electric heating is normal or not
2、Water flow is normal or not 3、
Overheating switch is normal or not
System 1 compressor
current protection
Poor working condition of the unit
or abnormal compressor operation
Check the compressor cable is normal
or not. Compressor working condition is
normal or not.
System 2 compressor
current protection
Poor working condition of the unit
or abnormal compressor operation
Check the compressor cable is normal
or not. Compressor working condition is
normal or not.
System 3 compressor
current protection
Poor working condition of the unit
or abnormal compressor operation
Check the compressor cable is normal
or not. Compressor working condition is
normal or not.
System 4 compressor
current protection
Poor working condition of the unit
or abnormal compressor operation
Check the compressor cable is normal
or not. Compressor working condition is
normal or not.
Low water outlet temp.
protection in defrost mode
Abnormal unit operation in
defrost mode
1. Water system is normal or not.
2. Unit is work or not, temp. of
discharge and pressure of system
is normal or not
Fan motor overload
protection
Abnormal fan motor
operation
1:Check whether the connection of the fan is
normal or not.
2:The unit input power supply is normal or not
3:The working conditions of unit is bad
Low ambient
temperature
protection
Ambient temperature is
beyond machine working range.
Contact manufacturers immediately
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