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2. Refrigerant charging
Procedure:
1). Connect the charge hose to the charging cylinder, open the 2-way valve and the 3-way valve
Connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom of
the cylinder. If the refrigerant is R410A, make the cylinder bottom up to ensure liquid charge.
2). Purge the air from the charge hose
Open the valve at the bottom of the cylinder and press the check valve on the charge set to purge the
air (be careful of the liquid refrigerant).
3) Put the charging cylinder onto the electronic scale and record the weight.
4). Open the valves (Low side) on the charge set and charge the system with liquid refrigerant
If the system cannot be charge with the specified amount of refrigerant, or can be charged with a little at
a time (approximately 150g each time) , operating the air conditioner in the cooling cycle; however, one
time is not sufficient, wait approximately 1 minute and then repeat the procedure.
5).When the electronic scale displays the proper weight, disconnect the charge hose from the 3-way
valve’s service port immediately
If the system has been charged with liquid refrigerant while operating the air conditioner, turn off the air
conditioner before disconnecting the hose.
6). Mounted the valve stem caps and the service port
Electronic scale
Summary of Contents for 38HVM109303P
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Page 14: ...14 MOG 24HFN1 MT0W...
Page 29: ...29 If T4 5 or the compressor starts running the preheating function will stop...
Page 47: ...47 9 2 2 Indoor outdoor units communication error diagnosis and solution E1...
Page 48: ...48 9 2 3 Fan speed has been out of control diagnosis and solution E3 E7...
Page 50: ...50 9 2 4 Open circuit or short circuit of temperature sensors diagnosis and solution E5 E6...
Page 51: ...51 9 2 5 IPM malfunction or IGBT over strong current protection diagnosis and solution P0...
Page 52: ...52 9 2 6 Over voltage or over low voltage protection diagnosis and solution P1...
Page 54: ...54 9 2 9 Inverter compressor drive error diagnosis and solution P4...