508067-01
Issue 2016
Page 36 of 75
7.
When the electronic scale displays the proper weight,
disconnect the charge hose from the 3- way valve’s
service port immediately.
8.
If the system has been charged with liquid refrigerant
while operating the air conditioner, turn off the air
conditioner before disconnecting the hose.
9.
Mounted the valve stem caps and the service port.
Use torque wrench to tighten the service port cap to a
torque of 18N·m (13.27 ft·lbs).
10.
Always leak check after servicing the refrigerant
system.
There are one low-pressure centralized valve and one
high-pressure centralized valve, it will be more time saving
when vacuum and recycle refrigerant. But refer to the
previous instruction when vacuum and recycle refrigerant.
Electronic Function
Abbreviation
• T1: Indoor ambient temperature
•
T2: Middle indoor heat exchanger coil temperature
•
T3: Outdoor heat exchanger pipe temperature
•
T4: Outdoor ambient temperature
•
T5: Compressor discharge temperature
Electric Control Working Environment.
• Input voltage: 230V.
•
Input power frequency: 60Hz.
• Indoor fan standard working amp.: <1A
•
Outdoor fan standard working amp.: <1.5A.
•
Four-way valve standard amp.: <1A
Adding Refrigerant - Single-Zone Systems
The outdoor unit is factory-charged with refrigerant.
Calculate the additional refrigerant required according to
the diameter and the length of the liquid pipe between the
outdoor unit and indoor unit connections.
Be sure to add the proper amount of additional refrigerant.
Failure to do so may result in reduced performance.
See Table 1 on page 12 for how much refrigerant needs
to be added based on pipe length.
NOTE:
Interconnecting pipe work between outdoor and
indoor units must be 10 ft. or longer.
NOTE:
Do not remove refrigerant for line lengths less than
25 ft. R-410A is a blended refrigerant. If you must remove
charge, it is necessary to remove the entire charge and
weigh in the new charge.
Single-Zone Outdoor Unit LED Locations
Single-zone outdoor units display flash codes on the main
board. The main board is accessed through the top of the
unit. Indoor units will display more detailed error codes.
These outdoor units do not have a SW1 spot check push
button switch. Diagnostic is performed through a series of
blue, red and green LEDs.
NOTE:
The control on all single-zone outdoor units is
mounted with all LEDs down and cannot be seen unless
the control is removed.
Figure 23.
Typical Location of Outdoor Unit LEDs