17
GB
2.3.5. Refrigerant piping
Indoor unit connection example
• Connect one connection kit per indoor unit.
• Connect the connection kit the liquid pipe.
• The thermistor-G (gas) is installed close to the connecting point of the extension piping (gas) for the indoor unit.
Piping connection size
* Connection kit ø6.35 × 0.8
Additional refrigerant quantity
• If necessary, add additional refrigerant to the unit by following the calculation method given in the outdoor unit manual.
• When calculating the refrigerant quantity, be sure to include the connection kit-to-indoor unit liquid pipe length.
• The amount of refrigerant required by the indoor units must be charged to the system. Refer to the manual that came with the
outdoor unit for details.
2.3.6. Error code
The table below summarizes the error codes for the indoor and outdoor units that are connected to the connection kit. Refer to the
relevant Service Handbook for other error codes.
Indoor unit capacity
Liquid pipe size (mm)
15-50
ø6.35 × 0.8
Error code
Indoor unit error code
(reference)
Error type
0404
Fb, FC
Indoor unit EEPROM abnormality
4124
PE
Electric system not operate due to damper abnormality
6840
E6, E8
A control communication reception error
6841
E9
A control communication synchronism not recover
6842
E7, E9
A control communication transmission/reception hardware trouble
6843
E6, E8
A control communication start bit detection error
Connection kit
MAX. 15 m
(Brazed)
02_WT06728X03-body.fm 17 ページ 2013年12月25日 水曜日 午後1時29分