Ecoplus ZR9W-300V Manuel d'instruction - Page 18

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1. Technical Data

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

RY1

RY2

AC-N

CN3

CN1

CN2

CONTROLLER

EMERGENCY SWITCH

AUX-HEATING

OUTPUT

ELECTRONIC EXPANSIVE VALVE

LED

CN19

CN4

HIGH PRESSURE PROTECT

LOW PRESSURE PROTECT

E-HEATER SURFACE TEMP. PROTECT

INDICATOR LIGHT

EVAPORATOR TEMP.

PIPE TEMP.

OUTLET WATER TEMP.

INLET WATER TEMP. SETTING

EXHAUST TEMP.