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Sealed System Components
Zonelines have an indoor coil, outdoor coil, compressor, drier, refrigerant metering device (capillary
tubes), check valve and reversing valve.
NOTE
:
A new drier MUST be installed anytime a sealed system is repaired.
Compressor
Compressor Diagnosing
Check for Fault Codes
Check fault codes by pressing and holding
MODE
and then press
AUX
. Verify whether fault
6 (Compressor Fault) code is active. Record any
other faults and clear the codes by pressing
AUX
.
Verify Compressor Operation
Enter Service Mode by pressing and holding
+
and
-
buttons. On entry, the display lights all
LED's. Press
MODE
until CL or HP (depending
on outside temperature) is shown in the display.
Pressing
+
turns the compressor on and
pressing
-
will turn the compressor off.
AUX
key
exits Service Mode.
Verify Compressor Resistance Values
Approximate compressor values can be checked
from the main control board or at the compressor.
NOTE
: The resistance values are depended on
BTU and supplied voltage.
Verify Compressor Capacitor Microfarad
Values
Approximate compressor capacitor microfarad
values can be checked from the capacitor.
NOTE
: The resistance values are depended on
btu and supplied voltage.
Compressor Resistance (ohms)
+/- 5% at 68°F
BTU
Voltage
Run
Start
9k
208/230V
4.06Ω
4.87Ω
9k
265V
6.56Ω
8.06Ω
12k
208/230V
3.21Ω
1.98Ω
12k
265V
4.28Ω
3.46Ω
18k
208/230V
1.82Ω
1.14Ω
18k
265V
2.30Ω
2.05Ω
Compressor Capacitor
Microfarad (µF)
BTU
Voltage
Microfarad
9k
208/230V
25 µF
9k
265V
15 µF
12k
208/230V
35 µF
12k
265V
25 µF
18k
208/230V
50 µF
18k
265V
35 µF
(
Continued next page
)
