Bard TCS22-***-003 manual Routine Maintenance, 1 TCS22 Troubleshooting

7. MAINTENANCE & TROUBLESHOOTING

7.1Routine Maintenance

The TCS22 requires minimal maintenance. Once every 4 years replace the battery under the controller cover. This battery powers the hardware clock during power outages.

Check sensor calibration once every two years.

7.2Troubleshooting

7.2.1TCS22 TROUBLESHOOTING

Problem	Check Out Points	Procedure
TCS22 Fails to operate	Check 240 Volt Power
	Check TCS22 Circuit breaker
	Check 24 Volt Power	Remove power connector from
		controller and Check for 24 volt Power
		from pin 1 to pin 3 on plug
	Check Internal Fuse	Remove screws from the four corner of
		the front panel of the controller. The
		fuse is located in upper left hand corner
		of the controller.
Blower #1 light is On but	Check A/C unit 24 Volt power
Blower fails to operate	from C to G
	Check controller switch	Remove junction connector J5. Check
		for continuity from pin #3 to pin #6 on
		controller with the Blower light ON.
	Check wiring and connections
Compressor #1 light is On but	Check A/C unit 24 Volt power
Compressor fails to operate	from C to Y
	Check controller switch	Remove junction connector J5. Check
		for continuity from pin #2 to pin #5 on
		controller with the Compressor light
		ON.
	Check wiring and connections
Heater #1 light is On but	Check A/C unit 24 Volt power
Heater fails to operate	from C to W1
	Check controller switch	Remove junction connector J5. Check
		for continuity from pin #8 to pin #11 on
		controller with the Compressor light
		ON.
	Check wiring and connections
Economizer #1 light is On but	Check controller switch	Disconnect E from the terminal strip on
Economizer fails to operate		the TCS22. Check for continuity from E
	2100-444-003A
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