Haier MRV 5-RC VP1-112B, Service Manual

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• When contacting electrical components, ensure they are powered off. Contacting the live part may result in the danger
of electric shock.
• If there is leakage of the refrigerant gas flow during operation, refrigerant gas is required. If the refrigerant gas contacts
any fire, poisonous gases will be produced.
• If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons
in order to avoid a hazard.
• This appliance can be used by children aged from 8 years and above and persons with reduced physical, sensory or
mental capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning
use of the appliance in a safe way and understand the hazards involved. Children shall not play with the appliance.
Cleaning and user maintenance shall not be made by children without supervision.
• This appliance is intended to be used by expert or trained users in shops, in light industry and on farms, or for
commercial use by lay persons.
• We recommend that the appliances be installed properly by qualified installation technicians in accordance with the
installation instructions provided with the unit.
Attention
• The valve box should be effectively grounded. Electric shocks may occur if the valve box is ungrounded or
inappropriately grounded. The wire for earthing shouldn’t be connected to the connections on the gas pipe, water pipe,
lightning rod or telephone.
• The breaker for electricity leakage should be mounted. If not, accidents such as electric shocks may happen.
• The installed valve box should be checked for electricity leakage by being powered.
• After installation, all cassette concealed valve boxes should be trial-tested. After the proper operation of the machine,
other fitments can be made.
• When installing the valve box, please fix the box and connecting pipes in an efficient way to avoid shaking when
changing valve box.
• If the ambient humidity bigger than 80%, when the water discharge hole be blocked or the filter becomes dirty, or airflow
speed change, there maybe leads to condensing water drop down, and at the same time there maybe some drops of
water spit out.
• Keep the valve box, power supply wiring, conductor, etc. at least 1 m away from the TV and radio to avoid image
interference and noise. However, sometimes there is still noise when the distance is over 1 m due to the different states
of radio waves.
• Try to install valve box where the fluorescent lamp is far away.
• When wireless devices are being installed, the distance that the signal from the controller will reach may be shortened
in a room with a fluorescent lamp that is turned on in an electric way (frequency conversion or rapid start).
• Please install the valve box in places where noise will not influence the customers too much (such as washroom,
passageway, warehouse, equipment room, etc.). Places with high requirement for quiet are not suggested for
installation, such as bedroom, drawing room, meeting room, office, etc.
• When starting up, stop, defrosting, and oil-returning in heating mode, the electronic expansion valve valve will switch
and cause noise. This kind of noise is normal for the switching of valve box.
Prohibitions
• Do not use components other than the fuse of proper capacity, such as metal wire and copper wire, which will cause
fires and other faults if used instead of the fuse.
• When doing the cleaning and maintenance, make sure that the operation has been stopped and the manual power
switch is in the off position.
• Do not use appliances such as water heater near the valve box. Using appliances producing steam near the valve box
may lead to accidents such as water leakage, electric leakage and short circuit when the cooling system is in operation.
• Two-generation valve boxes VP*-*A and VP*-*B can’t be mixed used in one system.