beautypg.com

Caution, Troubleshooting, Check thermostat operation – White Rodgers 1F95W-71 User Manual

Page 7: Cooling system operation, Fan operation, Heating system operation

background image

7

CAUTION

!

Cooling System Operation

To prevent compressor and/or property damage,
if power to the compressor has been off or
interrupted for more than 1 hour and the outdoor
temperature is below 50

°

F, DO NOT operate the

system for at least the amount of time the compres-
sor was off! This will allow the compressor heaters to
warm the compressor oils to avoid damage due to
slugging.

1.

Press

SYSTEM

HEAT - OFF - COOL - AUTO

until COOL is displayed.

2.

Press

to adjust the thermostat to 40

°

F. All

stages of the cooling system should come on within
five minutes (if the compressor is not operating, it may
be locked out. See LOCKOUT BYPASS OPTION).

Refer to the OPERATION GUIDE if you need additional
information on thermostat operation.

TROUBLESHOOTING

Refer to the Question & Answer section of the OPERA-
TION GUIDE
for information on troubleshooting the
thermostat.

5.

To enable partial keypad lockout (only the tem-
perature
buttons will function; all other buttons will be
disabled and will not operate until configuration is
changed):

Switch #4 in ON position disables all buttons except
and

, which may be used within a limited range (see

OPERATION GUIDE).

The battery maintains the stored program in the event of
a power failure. When attached to the wall with 24 VAC
power applied, the thermostat will function normally with-
out the battery. However, the program will be lost in the
event of power interruption or failure if the battery is not
installed. When power is restored, the thermostat will
automatically maintain a temperature of 64

°

F or a cooling

temperature of 82

°

F (factory preprogrammed) as needed.

CHECK THERMOSTAT OPERATION

Fan Operation

1.

Turn on power to the system. If the heat source has
a standing pilot, be sure to light it.

2.

Press

FAN

ON - AUTO

until FAN ON is displayed. The blower

should begin to operate.

3.

Press

FAN

ON - AUTO

until FAN AUTO is displayed. The

blower should stop operating within approximately
one minute.

Heating System Operation

1.

Press

SYSTEM

HEAT - OFF - COOL - AUTO

until HEAT is displayed (it may already

be displayed).

2.

Press

to adjust thermostat to 99

°

F. All stages of

the heating system should begin to operate within five
minutes.

ON

1

2

3

4

Switch #1 (see steps 1-2)
Switch #2 (see steps 3)
Switch #3 (see step 4)
Switch #4 ON

NOTE

CAUTION

!

LOCKOUT BYPASS OPTION

FOR QUALIFIED SERVICE TECHNI-
CIANS’ USE ONLY. OPERATORS
SHOULD NOT USE THIS FEATURE DUE
TO POSSIBILITY OF EQUIPMENT OR
PROPERTY DAMAGE, OR PERSONAL
INJURY.

DO NOT USE THE LOCKOUT BYPASS
OPTION UNLESS THE COMPRESSOR OIL
HEATERS HAVE BEEN OPERATIONAL
FOR 6 HOURS AND THE SYSTEM HAS
NOT BEEN OPERATIONAL FOR AT
LEAST 5 MINUTES.

COMPRESSOR SHORT TERM

CYCLE PROTECTION

This thermostat has a built-in short term (5-minute)
time delay. During this 5-minute period, the thermo-
stat will lock out the compressor to allow head pres-
sure to stabilize. If you want to override this feature

while testing thermostat operation, simply press

VIEW

TEMP

and

VIEW

PRGM

buttons at the same time at initial start-up.