GVZC20 Service Manual

SERVICING
66
CTK04 ADDENDUM
THERMOSTAT MENU SCREEN
SYSTEM START-UP TEST
O N INITIAL POWER START - UP , THE OUTDOOR UNIT WILL DISPLAY CODE
E11,
SIGNALING THAT INITIAL SYSTEM TEST MUST BE RUN . F OLLOW
THE
C OMFORT N ET ™ SETUP SCREEN TO ENTER APPLICATION - UNIQUE
INFORMATION . S EE C OMFORT N ET THERMOSTAT MANUAL FOR
DETAILED INFORMATION .
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A system test is now required to check the equipment
settings and functionality. Once selected, it checks the
equipment for approximately 5 - 15 minutes. System test
may exceed 15 minutes if there is an error. Refer to
the Troubleshooting section, if error code appears.
Before starting the SYSTEM TEST, turn o󰀨 the electric
heater and gas furnace.
NOTE: If the unit is attempting to run SYSTEM TEST in
under 20° F ambient temperature, the unit may not be able
to complete the test due to low suction pressure. In such a
case, re-run the SYSTEM TEST when the ambient tem-
perature exceeds 20° F.
1. Ensure the thermostat is installed.
2. Apply power to outdoor and indoor units.
3. Start-up.
After the application information is entered,
the initial system test must be run.
FOR INVERTER HEAT
PUMP CONDENSER SYSTEM USING COMFORTNET,
DO NOT INSTALL A TRANSFORMER.
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The HOME screen will be displayed showing infor-
mation similar to one of the adjacent screens. Select
MENU. Make sure the thermostat is in OFF mode and
select SYSTEM MENU. Choose OFF before SYSTEM
VERIFICATION test.
NOTE: Either screen may be displayed.
SYSTEM TEST must be run for all installations.
System will not operate without a completed initial
SYSTEM TEST.
NOTE: The thermostat screen may indicate to run a
SYSTEM VERIFICATION test.