Hot water converter of GMV5 Home Installation and Operation Manual
15
Note:
The above circuit diagram is only for reference. Please refer to the wiring circuit inside the electric box for
the detailed content.
8 Troubleshooting
8.1 Error code for hot water converter
Display code
Content
Display
code
Content
L4
Wired controller power
supply error
d4
Malfunction of entry temperature
sensor
L5
Freeze prevention protection d6
Malfunction of exit temperature
sensor
L6
Mode shock
dC
Setting of capacity DIP switch is
abnormal
L8
Insufficient power supply
dH
Circuit board of wired controller is
abnormal
dF
Malfunction of upper water
temperature sensor
d2
Malfunction
of
lower
water
temperature sensor
Note:
when there’s malfunction for the outdoor unit, the unit can generate hot water (start up the hot water
generation function when there’s water inside the water tank).
8.2 Common malfunctions
Malfunction phenomenon
Causes
Troubleshooting
No water
Water is stopped or water
pressure is too low
Check it.
Water pipe is blocked
Valve of water inlet pipe is
not open
No hot water or the water
temperature is not high
Water temperature is set
too low
Set it again
Wired controller is invalid
Contact with local maintenance
center
Heating time is too short
Heat it successively
Hot water volume is not
stable
Tap water pressure is not
stable
check it
Freeze prevention
Water temperature is too
low
Energize the unit or keep the
heating status for 30min above
8.3 After-sales service
The guarantee period for the complete unit is 21 months (started from the purchased date on
the invoice). The unit can be repaired freely within the guarantee period. User can take the
guarantee and invoice to the appointed maintenance center. When the unit has been used for
three years, please contact local maintenance center for door-to-door service (maintenance
should be charged).
Copyright 2018. This translation is property of GREE PRODUCTS SL. All rights reserved. Total or partial reproduction without its express authorization is prohibited.
