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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 11DSNA-A-1301
Page 1: ...NEOLA INVERTER SERIES Service Manual 2013 11DSNA A 1301...
Page 18: ...16 MS11D 22CRDN1 MN10W MS11D 22HRDN1 MN10W...
Page 20: ...18 MOC 18CDN1 MN10W MOC 18HDN1 MN5W...
Page 21: ...19 MOF 22CDN1 MN5W MOF 22HDN1 MN5W...
Page 52: ...50 9 2 2 Indoor outdoor unit s communication error diagnosis and solution E1...
Page 56: ...54 9 2 5 IPM malfunction or IGBT over strong current diagnosis and solution P0...
Page 57: ...55 9 2 6 Over voltage or too low voltage protection diagnosis and solution P1...
Page 58: ...56 9 2 7 High temperature protection of compressor top diagnosis and solution P2...
Page 59: ...57 9 2 8 Inverter compressor drive error diagnosis and solution P4...