194/226
Building Technologies
Boiler Sequence Controller RMK770
CE1P3132en
HVAC Products
14 Fault tracing support
01.03.2005
14 Fault tracing support
If a fault is displayed, it is always practical to select operating line
Faults > Faults current
and look for any pending fault status messages before starting to rectify faults. If an
extension module is faulty, that fault must always be rectified first because it may lead
to a number of subsequential fault status messages.
14.1 Error code list
The RMK770 has maximum 1 heating circuit and 1 time switch. Index 1 indicates that
the sensor error occurred on this plant.
Number
Name
Possible cause, remarks
10
Outside temp sensor
error
Outside temperature sensor not connected, bus
communication interrupted.
Outside temperature zone not correctly set
(transmitter and receiver must have the same
outside temperature zone).
Backup value is 0 °C.
Nonurgent message; must not be acknowledged
11
>1 outside tempera-
ture sensor
More than 2 outside temperature sensors in the
same outside temperature zone.
Urgent message; must be acknowledged
12
Outs sensor simula-
tion active
Simulation of the outside temperature is still ac-
tive. Simulation of the outside temperature may
only temporarily stay active.
Nonurgent message; must not be acknowledged
50
[HC 1] flow sensor
error
Nonurgent message; must be acknowledged
51
[HC 1] return sensor
error
Error return temperature sensor heating circuit 1.
Nonurgent message; must be acknowledged
57
Prim controller error
flow sensor
Error primary controller flow temperature sensor.
Nonurgent message; must be acknowledged
58
Prim controller error
ret sensor
Error primary controller return temperature sen-
sor.
Nonurgent message; must be acknowledged
60
Room sensor error
plant 1
Error room temperature sensor plant 1.
Nonurgent message; must not be acknowledged
61
>2 room sensors in
plant 1
More than 2 room temperature sensor for plant 1
in the same geographical zone.
Urgent message; must be acknowledged
301
[Boiler 1] boiler
sensor error
Error boiler sensor boiler 1
302
[Boiler 2] boiler
sensor error
Error boiler sensor boiler 2
303
[Boiler 3] boiler
sensor error
Error boiler sensor boiler 3
304
[Boiler 4] boiler
sensor error
Error boiler sensor boiler 4
305
[Boiler 5] boiler
sensor error
Error boiler sensor boiler 5