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.CONTROLLER INTRODUCTION
Fifth fault possibility
and solution
Sixth fault possibility and
solution
The solution for different fault as followed
Solution for " EE02 " listed below:
1.3 Fault query
Solution of "EE02"
1. Bad connection between low pressure switch
lead wire and PCB board"prot3" terminal
please ensure both 2 lead wires of high
pressure switch are in good condition and
well fixed on terminal "PROT3" on PCB
board.
1.3 Fault query
Solution of "EE02"
4. Water tank water temp lower than 10 C and
ambient temp lower than 5 C,may cause
EE02. Please ensure heat pump is running
or turn on the electric heater to assist the
heating.
1.3 Fault query
Solution of "EE02"
6. Internal damage on low pressure switch may
also cause EE02. Please remove the low
pressure switch under heat pump stand-by
state, use a multimeter to measure the
resistance between 2 lead wire , if resistance
= 0 Ω then it is working, otherwise please
replace with a new one.
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1.3 Fault query
Solution of "EE01"
5. The high pressure switch has internal problem
may also cause EE01. Please remove the high
pressure switch during stand-by state, use a
multimeter to measure the resistance between
2 lead wire, if resistance = 0 Ω then it is
working, otherwise please replace with a new
one.
1.3 Fault query
Solution of "EE01"
If after trying all above solution,EE01 still
shows, please replace with a new PCB
board.
1.3 Fault query
Solution of "EE02"
2. Low speed or malfunction on fan may also
cause EE02. Please ensure the fan is
running normal.
3.Evaporator is blocked and lead to bad heat
exchanging may also cause EE02. Please
ensure the evaporator is clean and nothing
block on the surface.
1.3 Fault query
Solution of "EE02"
5. Heat pump has internal refrigerant gas
leakage, may cause EE02. Please check all
the refrigerant gas pipes and welding joints
to ensure no leakage for gas circuit.Seal the
leakage dot in time,vacuum the gas circuit
and infill same refrigerant gas amount
marked on rating label.
1.3 Fault query
Solution of "EE02"
If after trying all above solution,EE02 still
shows, please replace with a new PCB
board.
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