To Shut Unit Off (Units With Electro-Mechanical Control); To Shut Unit Off - Carrier 48PG03---16 User's Information Manual

Step 8 —
Remove lockout tag and turn on the electrical
supply to unit. Normal operation will automatically begin.
Service Test mode will automatically end (exit) after a recycle
of power.
Step 9 —
Open the shutoff valve on the gas supply piping.
Step 10 —
To test the operation of the gas section, the
HEAT submenu of Service Test may be used. See the Controls,
Start-Up, Operation, Service, and Troubleshooting Instructions
for more details on use of Service Test.
Step 11 —
For normal operation, make sure that the set
points are at the normal heat set points.
If the main burners fail to light, or the blower fails to come
on, shut down gas heating section and call your dealer for
service. Failure to follow these requirements could result in
serious personal injury.

TO SHUT UNIT OFF

(Units with Electro-Mechanical Control)
Do not turn off the electrical power to unit without first
turning off the gas supply.
Failure to follow these procedures can result in serious
fire or personal injury.
See Fig. 1 for location of gas valve. Refer to Fig. 4 while
proceeding with the following steps.
Step 1 —
Set room thermostat to lowest temperature setting
and set SYSTEM switch to OFF position.
Step 2 —
Close the shutoff valve on the gas supply piping.
Step 3 —
Turn off the electrical power supply to the unit
and install lockout tag.
Step 4 —
Open the heat section access panel.
Step 5 —
Move ON/OFF switch on the internal gas valve
to the OFF position.
Step 6 —
Close the heat section access panel.
Step 7 —
If unit is being shut down because of a malfunc-
tion, call your dealer as soon as possible.
If unit is being shut down because the heating season has
ended, restore electrical power to the unit to ensure operation
of the cooling system during the cooling season.
Should overheating occur, or the gas supply fail to shut off,
shut off the manual gas valve to the unit before shutting off the
electrical supply.
Do not use this unit if any part has been under water. Imme-
diately call a qualified service technician to inspect the unit and
to replace any part of the control system and any gas control
which has been under water.
TO SHUT UNIT OFF
(Units with Comfort Link™ Control)
Do not turn off the electrical power to unit without first
turning off the gas supply.
Failure to follow these procedures can result in serious
fire or personal injury.
See Fig. 1 for location of gas valve. Refer to Fig. 5 while
proceeding with the following steps.
Step 1 —
Turn off the unit operation by using the Scrolling
Marquee to put the unit into Service Test mode. The Scrolling
Marquee is located on the front of the unit control box behind
the control box and compressor access door (see Fig. 6).
Thermostat inputs and remote network commands are ignored
when Service Test mode is ON.
a. A password may be required to change Service Test
values depending on previous settings configured in the
unit. Default password is "1111."
ESCAPE
b. Press the
c. Use the arrow keys to scroll the red LED on the display
to the "Service Test" position and press
d. The control will display the Field Service Test Mode
(TEST) setting. Press
setting for configuration. Press
"OFF" to begin flashing.
e. Use the arrow keys to change the configuration from
"OFF" to "ON," then press
save the setting.
Step 2 —
Close the shutoff valve on the gas supply piping.
Step 3 —
Turn off the electrical power supply to the unit
and install lockout tag.
Step 4 —
Open the heat section access panel.
Step 5 —
Move ON/OFF switch on the internal gas valve
to the OFF position.
Step 6 —
Close the heat section access panel.
Step 7 —
If unit is being shut down because of a malfunc-
tion, call your dealer as soon as possible.
If unit is being shut down because the heating season has
ended, restore electrical power to the unit to ensure operation
of the cooling system during the cooling season.
Should overheating occur, or the gas supply fail to shut off,
shut off the manual gas valve to the unit before shutting off the
electrical supply.
Do not use this unit if any part has been under water. Imme-
diately call a qualified service technician to inspect the unit and
to replace any part of the control system and any gas control
which has been under water.
5
key until a blank screen is shown.
ENTER
once to select the TEST
ENTER
again for
ENTER
and ESCAPE
ENTER
.
to