![background image](http://html1.mh-extra.com/html/thermo-king/sr-2-smartreefer2/sr-2-smartreefer2_diagnostic-manual_1104380218.webp)
Section 5 – SR-2 Diagnostics
26 CHECK REFRIGERATION CAPACITY
Page 1 of 1
Alarm Type
Check Alarm
Associated Alarm
Codes
Alarm Code 85 Forced Unit Operation
How Alarm is Set
1. This alarm is generated if the unit’s heating or cooling capacity is reduced far enough below normal levels
to indicate a refrigeration problem.
2. The capacity loss is not significant enough to force the unit into shutdown mode.
3. This alarm can be generated in cool or heat mode.
How Alarm is Cleared
This alarm is cleared manually or automatically.
Considerations
If the unit is running in reduced capacity mode because of a Prevent alarm and Alarm Code 26 is set, Alarm Code
85 Forced Unit Operation alarm is also set. Alarm Code 85 indicates the unit was forced into a reduced capacity
mode.
Diagnostic Procedure
Download and review the ServiceWatch data logger using Technician Level to determine the conditions at the time
the alarm was set.
1. Check temperature differential by displaying the temperature differential, or by checking the difference
between the control return and control discharge sensors.
2. Check refrigerant level.
3. Attach gauges and evaluate unit refrigeration system performance.
4. Verify that sensor grades are set correctly.
5. Check for proper air flow. Short cycling, caused by a blocked air flow path, may generate this code.
6. Check
evaporator
superheat.
5-36
02 February 2005
Summary of Contents for SR-2 SmartReefer2
Page 4: ......
Page 7: ...Tab goes here and the next page should be GREEN Section 1 Safety...
Page 8: ......
Page 10: ...Section 1 SR 2 Safety Information 1 2 18 January 2005...
Page 14: ...Section 1 SR 2 Safety Information 1 6 18 January 2005...
Page 15: ...Tab goes here and the next page should be GREEN Section 2 Hardware Description...
Page 16: ......
Page 48: ...Section 2 SR 2 Hardware Description 2 32 31 January 2005...
Page 49: ...Tab goes here and the next 2 pages should be GREEN Section 3 Software Description...
Page 50: ......
Page 96: ...Section 3 SR 2 Software Description 3 46 31 January 2005...
Page 97: ...Tab goes here and the next page should be GREEN Section 4 Operation...
Page 98: ......
Page 181: ...Tab goes here and the next 2 pages should be GREEN Section 5 Diagnostics...
Page 182: ......
Page 266: ...Section 5 SR 2 Diagnostics 5 84 02 February 2005...
Page 267: ...Tab goes here and the next page should be GREEN Section 6 Service Procedures...
Page 268: ......
Page 270: ...Section 6 SR 2 Service Procedure Index Page 2 01 February 2005...
Page 282: ...Section 6 SR 2 Service Procedure A01B Page 6 P41RA01B 31 January 2005...
Page 298: ...Section 6 SR 2 Service Procedure A02A Page 12 P41RA02A 02 February 2005...
Page 318: ...Section 6 SR 2 Service Procedure A03B Page 4 P41RA03B 30 January 2005...
Page 338: ...Section 6 SR 2 Service Procedure A15A Page 4 P41RA15A 30 January 2005...
Page 360: ...Section 6 SR 2 Service Procedure A46B Page 8 P41RA46B 30 January 2005...
Page 366: ...Section 6 SR 2 Service Procedure A48A Page 6 P41RA48A 30 January 2005...
Page 376: ...Section 6 SR 2 Service Procedure A50A Page 6 P41RA50A 31 January 2005...
Page 394: ...Section 6 SR 2 Service Procedure F08A Page 4 P41RF08A 30 January 2005...
Page 398: ...Section 6 SR 2 Service Procedure F09A Page 4 P41RF09A 30 January 2005...
Page 402: ...Section 6 SR 2 Service Procedure G03A Page 4 P41RG03A 31 January 2005...
Page 406: ...Section 6 SR 2 Service Procedure H04A Page 4 P41RH04A 30 January 2005...
Page 407: ...Tab goes here and the next page should be GREEN Section 7 Service Information...
Page 408: ......
Page 410: ...Section 7 SR 2 Information 7 2 02 February 2005...
Page 419: ...Tab goes here and the next page should be GREEN Section 8 Schematics and Wiring Diagrams...
Page 420: ......
Page 422: ...Section 8 SR 2 Drawings 8 2 01 February 2005...
Page 424: ...Section 8 SR 2 Drawings 8 4 01 February 2005...
Page 425: ...8 5...
Page 426: ...8 6...
Page 427: ...8 7...
Page 428: ...8 8...
Page 429: ...8 9...
Page 430: ...8 10...
Page 431: ...8 11...