Midea JSD12-6DH4, Instruction Manual

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Trial running / Maintenance
Trial running
Trial running
Important notices for repair and maintenance
Trial running should be carried out by authorized professionals.
Please check the following items:
Is the heater connected and installed according to the specifi-
cations provided by the manufacturer?
Do indications of the power panel of the heater accord with the
actual installation conditions?
Are the air intake and the exhaust pipe correctly installed?
Does the heater accord with the relevant requirements of
ventilation? Is the channel of the air intake still not sealed?
Open the battery compartment and put two batteries in (LR20, 1.5V).
Turn on the hot water faucet and wait for the water to flow out,
and then turn it off.
Turn on the gas switch.
Turn the energy rectifier to the maximum energy.
Turn on the hot water faucet.
Check the flame current
Check the trial running of nozzle according to the nozzle table.
Please give instructions to users for the running and operation
of the heater.
All the repair and maintenance must be carried out by authorized
technicians. The maintenance of the water heater must be fulfilled
at least once a year. It is recommended to carry out the mainten-
ance after a period of heating operation. The maintenance and repair
must be kept in record. Before cleaning or maintenance and repair,
please take off battery from the water heater and turn down the gas
switch. Only the original spare parts for maintenance can be used.
If the spare parts used for maintenance are not original, the man
ufacturer does not assume any quality guarantee. The connecting
pieces must be new.
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Open the casing
Maintenance and repair of butane facility
Before maintenance and repair, please open the casing.
Screw off the two bolts on the casing (at the lower part/ back
of casing).
Take out the operation button.
Take off slipcover at the lower part of the casing gently: press
it upwards and then take it off forwards.
Carrying out the following works of maintenance and repair:
Check whether the operation of exhaust system is in the
perfect state?
Demount the burner and close the gas output in the case of
no operation of the water heater. Please clean burner and the
gas nozzle with a brush and a vacuum cleaner.
Clean heat exchanger with a brush and a vacuum cleaner.
Remount the burner.
Check whether the ignition electrode and the controller are
intact? If damaged, please replace them with the new ones.
Check whether the distance between the ignition electrode
and surface of fuel is reasonable. This distance should be
between 3mm and 5 mm.
Check whether the ignition, operation and disconnection of
the heater are in perfect state.
Check whether the gas connection and the nozzle pressure
under rated load are normal.
Check the tightness of the water and gas.
Check whether operation of the security device is normal.
Check whether all the operation performance is in normal
state.
Check whether there is any gas leakage with a soapy solution
at gas joint.
Mount the casing and clean it with a wet rag and soapy water.
If a hosepipe is used to connect the gas, please replace
it with a new hosepipe once a year.
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Troubleshooting
No flame Different types of gases as fuel Open the gas valve
For connection with use of butane:
Check the gas cylinder, if necessary, please replace
it with a new one.
Air in the gas feeding Close and open the distributor for several times
The battery is null or placed in wrong
direction
Please check the polarity of the batteries, if neces-
sary, please replace them with new ones.
No hot water Open the distributor of hot water
Low water temperature The gas valve is not completely on
Open the gas valve completely
During the operation of the
water heater, flame goes out
The exhaust system is blocked Check whether the exhaust pipe is fluent or not
When the water pressure is too low, the
rectifier of water pressure will be
disconnected from the water heater
Reduce some energy and check the connecting state
of water
If there is any failure, please make contact with the corresponding technical service department or an installer!
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