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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.
Compressor Resistance (ohms)
+/- 5% at 68°F
BTU
Voltage
9k
208/230V
9k
265V
12k
208/230V
12k
265V
18k
208/230V
18k
265V
Sealed System Components
Run
Start
4.06Ω
4.87Ω
6.56Ω
8.06Ω
3.21Ω
1.98Ω
4.28Ω
3.46Ω
1.82Ω
1.14Ω
2.30Ω
2.05Ω
– 44 –
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 Capacitor
Microfarad (µF)
BTU
Voltage
9k
208/230V
9k
265V
12k
208/230V
12k
265V
18k
208/230V
18k
265V
Microfarad
25 µF
15 µF
35 µF
25 µF
50 µF
35 µF
(Continued next page)
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