Ecoplus ZR9W-300V Gebrauchsanweisung - Seite 18

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6.

MAINTENANCE

Maintenance
Heat pump water heater is a high automatic equipment, please perform regular inspection termly.
If the unit can be long-term and efficiently maintenance, the operating reliability and service life
will have an unexpected increase.
1).The extra water filters should be cleaned regularly to ensure clean water quality of the system,
and to avoid damage caused by dirty water filter blocking.
2).Frequently check the power supply and electrical wiring system is solid or not, whether electrical
components are abnormally working, if yes, should timely maintenance and change for a new one.
3).Perform regular checks of the water supply system, check whether the tank safety valve, liquid
level controller and exhaust devices work properly, so as to avoid air into the system , and reduce
the water cycle volume, thus affect the heating function and operation reliability.
4).Check whether pumps and water valves are normal working or not, whether water tubing and
water pipes connector are leakage or not.
5).The unit and around should remain clean , well-ventilated. To maintain a good effect of heat
exchange, DON'T put things around the unit.
6).If the unit stops for a longer time, should drain all the water in the pipeline, cut off power supply,
and sets the protective equipment. When re-run the unit, complete inspection is a must before
reboot.
7).Water tanks need to remove the Water scale after some time (normally two months, according to
the water quality of local place). It can clean the scale by the drain hole.

7. APPENDIX

Appendix
1). Controlling board access
POWER INPUT
COMP.OUTPUT
OUT3
4WAY-VALVE
OUT4
FAN
AUX-HEATING
INPUT
OUT1
OUT2
3
RY1
3
RY2
4
AC-N
CN3
CN1
CN2
CONTROLLER
EMERGENCY SWITCH
AUX-HEATING
OUTPUT
ELECTRONIC EXPANSIVE VALVE
LED
CN19
CN4
4
HIGH PRESSURE PROTECT
LOW PRESSURE PROTECT
E-HEATER SURFACE TEMP. PROTECT
16
INDICATOR LIGHT
EVAPORATOR TEMP.
PIPE TEMP.
OUTLET WATER TEMP.
INLET WATER TEMP. SETTING
EXHAUST TEMP.