Econ NE-F50SP/R4INV-PA, User Manual

Page: 34 / 54

31
Water
temperature
is cooling
when heat
pump runs
under heating
mode
LED wire controller
displays actual water
temperature and no error
code displays
1. Chose the wrong mode
2. Figures show defects
3. Controller defect
1. Adjust the mode
2. Replace the defect LED wire
controller, and then check the
status after changing the running
mode, verifying the water inlet
and outlet temperature
3. Replace or repair the heat
pump
Short running
LED displays actual water
temperature, no error code
displays
1. Fan NOT running
2. Not enough air ventilation
3.Not enough refrigerant
1. Check the cable connections
between the motor and fan, if
necessary, they should be
replaced
2. Check the location of the heat
pump, and eliminate all
obstacles to assure a good air
ventilation
3 Replace or repair the heat
pump
Water stains
Water stains on heat pump
unit
1. Concreting
2. Water leakage
1. No action
2. Check the titanium heat
exchanger carefully if it shows
any defects
Too much ice
on evaporator
Too much ice on
evaporator
1. Check the location of heat
pump, and eliminate all
obstacles to assure a good air
ventilation
2. Replace or repair the heat
pump