White Rodgers 1F94-80 Check Thermostat Operation, Troubleshooting, Emergency Mode Operation

CHECK THERMOSTAT OPERATION EMERGENCY MODE OPERATION

FAN OPERATION

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

2.	Press	FAN	until FAN ON is displayed. The blower
		SWITCH
	should begin to operate.
3.	Press	FAN	until FAN AUTO is displayed. The
		SWITCH

blower should stop operating within approximately one minute.

HEATING SYSTEM

1. Press	SYSTEM	until HEAT is displayed (it may al-
	SWITCH

ready be displayed).

2.Press to adjust thermostat to 99°F. All stages of the heating system should begin to operate within approximately five minutes. However, if the PUMP LED is flashing, the compressor lockout feature is operating (see Lockout Bypass Option to tempo- rarily override the compressor lockout feature during testing).

1. Press	SYSTEM	until EMER is displayed. The red
	SWITCH

EMER LED should be lit continuously (non-flashing), regardless of system cycling.

2.Press to adjust thermostat about 5°F above room temperature. Any systems (such as electric strip heaters, fossil fuel systems, etc.) that are wired or jumpered to the emergency circuit (thermostat terminal E1) should begin to cycle.

After the system has been checked and is running prop- erly, determine if automatic changeover is desired (see

SYSTEM CONFIGURATION).

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.

COOLING SYSTEM

!CAUTION

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	until COOL is displayed.
	SWITCH

2.Press to adjust thermostat to 40°F. All stages of the cooling system should begin to operate within approximately five minutes. However, if the PUMP LED is flashing, the compressor lockout feature is operating (see Lockout Bypass Option to tempo- rarily override the compressor lockout feature during testing).

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 PRGMVIEW and TEMPVIEW 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.

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