Basic Documentation

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Siemens Universal controllers RMU710B, RMU720B, RMU730B CE1P3150en
Building Technologies Support on errors and faults 03.10.2011
Code no. Cause of error/fault Effect
1236 [Pump 3A] overload See 10.2.6 Pump
1237 [Pump 3B] overload See 10.2.6 Pump
1234 [Pump 3A] no flow See 10.2.7 Pump
1235 [Pump 3B] no flow See 10.2.7 Pump
1238 [Pump 3] precom no checkb sign See 10.2.9 Pump
1240 [Pump 4] fault See 10.2.4 Pump
1241 [Pump 4] overload See 10.2.7 Pump
1242 [Pump 4] no flow See 10.2.6 Pump
1246 [Pump 4A] overload See 10.2.6 Pump
1247 [Pump 4B] overload See 10.2.6 Pump
1244 [Pump 4A] no flow See 10.2.7 Pump
1245 [Pump 4B] no flow See 10.2.7 Pump
1248 [Pump 4] precom no checkb sign See 10.2.9 Pump
3011 [Main contr var 1] sensor error See 12.4 Demand-controlled supply air temperature control
See 14.2.3 Universal controller (basic types
A, P, C, U)
See 13 Flow temperature, demand-controlled (basic type C)
See 15.1.5 Sequence controller
3012 [Main contr var 2] sensor error See 14.2.3 Universal controller (basic types A, P, C, U)
See 15.1.5 Sequence controller
3013 [Main contr var 3] sensor error See 14.2.3 Universal controller (basic types A, P, C, U)
See 15.1.5 Sequence controller
3101 [Controller 1] inadm deviation See 15.7.1 Deviation message
3102 [Controller 2] inadm deviation See 15.7.1 Deviation message
3103 [Controller 3] inadm deviation See 15.7.1 Deviation message
3111 HR efficiency deviation See 10.4 Heat recovery equipment (basic types A, P)
3201 No heat available See 25.8 Heat demand
3202 No refrigeration available See 26.8 Refrigeration demand
3900 Fire alarm off See 24.4 Faults
3901 Smoke extraction See 24.4.2 Faults
3911 Filter dirty See 24.4.2 Faults
3920 Frost See 17.5.2 Frost protection (basic types A and P)
3922 Frost risk frost 1 See 17.5.2 Frost protection (basic types A and P)
3923 Frost risk frost 2 See 17.5.2 Frost protection (basic types A and P)
3924 Frost risk frost 3 See 17.5.2 Frost protection (basic types A and P)
3921 Frost protection sensor error See 17.5.2 Frost protection (basic types A and P)
3931 Simulation VAV supply air
See 23.6 Volume flow balancing
3932 Simulation VAV extract air
See 23.6 Volume flow balancing
5000 No bus power supply See 28.2.1 Communication
5001 System time failure See 5.1.3 Time of day and date
5002 >1 clock time master See 5.1.3 Time of day and date
5003 Invalid time of day See 5.1.3 Time of day and date
5101 Syst time switch failure plant 1 See 6.9.5 Troubleshooting
5102 >1 time switch in plant 1 See 6.9.5 Troubleshooting
5111 [Time switch 2] failure See 7.6 Time switch 2 (ON/OFF)
5201 Hol/spec day program failure See 6.10.6 Holidays / special days (basic types A, P, C, U)
5202 >1 hol/spec day program See 6.10.6 Holidays / special days (basic types A, P, C, U)
5402 >1 identical geogr zone [1] See 28.2.1 Communication
5801 H/C changeover signal failure See 13 Flow temperature, demand-controlled (basic type C)
5802 >1 heat/cool changeover signal See 27.6 Heating/cooling changeover