UACProducts

INFORMATION SELECT LIST:

ACCESSING THE DIAGNOSTIC MODE ON ATC SYSTEMS
Model	Instructions
Caterpillar/AGCO Challenger	With the system On, press the "OUTSIDE AIR TEMPERATURE" button three times to enter the error code mode. Press and hold the "OUTSIDE AIR TEMPERATURE" button for an additional five seconds to enter the advanced diagnostics real time display.
CNH Windrower	Press the "ON" button three times to enter the error code mode. Press and hold the "ON" button for an additional five seconds to enter the advanced diagnostics real time display.
Freightliner P2 Century Class	Available only on the SAE 1708 Data Link
Red Dot	With the system On, press the "OUTSIDE AIR TEMPERATURE" button three times to enter the error code mode.
Western Star	With system off, press and hold "UP" temperature switch for five seconds to enter error code mode. Press and hold the "UP" temperature switch for an additional five seconds to enter the advanced diagnostics real time display.

TEMPERATURE SENSOR RESISTANCE CHART
Temperature		Nominal Resistance
°C	°F	3K Ohms	5K Ohms	10K Ohms
66	150	600	1,000	2,000
63	145	700	1,100	2,200
60	140	700	1,200	2,400
57	135	800	1,400	2,700
54	130	900	1,500	3,000
52	125	1,000	1,700	3,300
49	120	1,100	1,900	3,700
46	115	1,300	2,100	4,100
43	110	1,400	2,300	4,600
41	105	1,600	2,600	5,200
38	100	1,800	2,900	5,800
35	95	2,000	3,300	6,500
32	90	2,200	3,700	7,400
29	85	2,500	4,100	8,300
27	80	2,800	4,700	9,400
25	77	3,000	5,000	10,000
24	75	3,100	5,200	10,500
21	70	3,600	5,900	11.900
18	65	4,000	6,700	13,600
16	60	4,600	7,600	15,500
13	55	5,200	8,700	17,700
10	50	5,900	9,900	20,200
7	45	6,800	11,300	23,300
4	40	7,800	13,000	26,700
2	35	9,000	14,900	30,900
-1	30	10,300	17,200	35,700
-4	25	11,900	19,900	41,400
-7	20	13,800	23,000	48,200
-9	15	16,000	26,700	55,900
-12	10	18,700	31,100	65,700
-15	5	21,800	36,300	76,100
-18	0	25,500	42,500	90,300

Universal Air Conditioner // 1441 Heritage Parkway, PO Box 299 // Mansfield, TX 76063
817-740-3900 // fax 817-740-3997