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8 MAINTENANCE
8.1 Confirmation before running
1) Make sure whether ground wire is broken or fall off.
2) Power on the machine after all connections are qualified.
8.2 Troubleshooting when abnormal situation happens
Before asking for serving or repairing, check the following points:
• Non-mechanical malfunction
1) Water oozes from safety valve pressure relief opening
- W hen water heating, cold water will expand when heated, water oozing is normal. Do not block it for safety consideration.
- I f a large amount of water flows, it means safety valve is invalid.Stop using and replace safety valve.
2) Long period for heating a tank of water
- I n winter, water heating efficiency will decrease because of low ambient temperature(about 0°C).It will take a longer time for
water heating.
- If customer needs to use hot water, please start the unti in advance.
• Need to check
1) Automatically start or stop
- Whether we set timer wrongly. 2) When not working
- Check whether powering on.
- Whether manual switch is on.
- Whether fuse blows.
- Whether start the protection device (indicator lights).
- Whether it is not the time of timer on. (Operation lamp lights.)
3) If heating effect is not good
- Whether air outlet and inlet has been blocked.
•
If the following situation happens, please stop running and cut off power supply manually and contact with the dealer
or service center.
- ON/OFF operation is ineffective.
- Fuse or RCCB trips frequently
•
Before leave unused for a long time, please complete the following items:
- Drain water from tank and pipes, close all valve bodies.
•
After leave unused for a long time, please check the following items:
- Check air inlet and outlet of the unit to see whether they are blocked. Clean immediately when they are blocked.
- Check whether water pipes, valves have been damages or blocked. Whether there's water leakage in joints,
replace them wwhen water leaks.
- It is suggest to inspect anode protection material every half year. If it has been exhausted, please replace it with
a new one.
8.3 After-sale service
In case of malfunctions, please cut off the power switch and contact after-sale service centre or technical service department, for
detailed information please refer to User Service Guide.
8.4 Important information for the used refrigerant
This product has the fluorinated gas, it is forbidden to release to air.
Refrigerant type: R134a; Volume of GWP: 1430;
GWP=Global Warming Potential
CAUTION
Refrigerant/kg
0.9
21
Table 8-1
Factory charge
tonnes CO
equivalent
2
1.29
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