Siemens RWF40.002B97 - What to do if...; ...numbers are flashing on the display

HVAC Products CC1B7865en 05.12.2002 51/57
10. What to do if ...
This is an indication of incorrect measured value acquisition.
F
Detection of measured value range crossings depends on the type of sensor
used.
ð Section 11.3.2 «Measured value circuit monitoring»
Display Description Cause / controller behavior / remedy
1999
60.0
7865p08/0200
Actual value display
(red) shows «1999»
flashing.
Setpoint display shows
the setpoint.
G
Overrange or underrange on analog
input 1.
Actual value is not measured. Controller
initiates lockout.
ð Section 5.3 «Safety shutdown»
The limit comparator responds to analog
input 1 according to the configuration
(C113).
٭ Check electrical connections for
open-circuit of sensor
1999
tA
7865p10/0200
When analog input 3 is
configured for outside
temperature (C111) and
the measured value is
called up, the actual
value display (red)
shows «1999» flashing.
G
Overrange or underrange on analog
input 3.
Outside temperature is not measured!
The weather-dependent setpoint is
inactive!
٭ Check electrical connections for
open-circuit of sensors
1999
SP.E
7865p09/0200
When analog input 2 is
configured (C111) and
the measured value is
called up, the process
value display (red)
shows «1999» flashing.
G
Overrange or underrange on analog
input 2.
External setpoint is not measured.
Controller initiates lockout
ð Section 5.3 «Safety shutdown»
٭ Check electrical connections for
open-circuit of sensors
53.2
1999
7865p07/0200
Actual value display
(red) shows «XXXXXX».
Setpoint display (green)
shows «1999» flashing.
G
Overrange or underrange on analog
input 2.
Setpoint shift is not measured. Controller
initiates lockout
ð Section 5.3 «Safety shutdown»
٭ Check electrical connections for
open-circuit of sensor
10.1 ...numbers are flashing on the display