White-rodgers 1F90W-51 Manual de usuario Pagina 7
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LOCKOUT BYPASS OPTION
FOR QUALIFIED SERVICE TECHNICIANS’ USE
ONLY. OPERATORS SHOULD NOT USE THIS
FEATURE DUE TO POSSIBILITY OF EQUIPMENT
OR PROPERTY DAMAGE, OR PERSONAL INJURY.
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
ADV
PRGM
and
HOLD
TEMP
buttons at the same time at initial startup.
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.
COOLING SYSTEM
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 com-
pressor 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 thermostat below room tem-
perature to call for cool. The blower should come on
immediately, followed by cold air circulation. How-
ever, if the red LED on the thermostat front is flashing,
the compressor lockout feature is operating (see
Lockout Bypass Option to temporarily override the
compressor lockout feature during testing).
If the thermostat display is operating properly, but the
cooling system does not operate when the above
steps are performed, the red jumper wire (provided
with thermostat) may not be properly installed be-
tween the RH and RC terminals. Disconnect electri-
cal power to system and properly install the jumper
wire per the appropriate wiring schematic.
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 ther-
mostat.
CAUTION
!
- 1F90W-51 1
- WHITE-RODGERS 1
- SPECIFICATIONS 2
- NEW INSTALLATION 2
- INSTALLATION 2
- REPLACEMENT INSTALLATION 3
- THERMOSTAT 4
- From heating system 4
- From 24vAC transformer 4
- ATTACH THERMOSTAT TO SUBBASE 5
- SYSTEM CONFIGURATION 6
- CHECK THERMOSTAT OPERATION 6
- OPERATION 6
- TROUBLESHOOTING 7
- 9797 Reavis Road 8
- St. Louis, MO 63123 8
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