Vaisala PWD22 User Manual page 116

User's Guide _______________________________________________________________________
Status Message Typical
P12
Positive voltages 11.5 V
of the DC/DC
converter for the
transmitter and
receiver
M12
Negative -11.5 V
voltages of the
DC/DC converter
for the transmitter
and receiver
DRD
Instant value of 64...900Hz 64 / DRY
®
RAINCAP Rain
Sensor
BL
Background 4...20000
luminance cd/m²
RELAYS
States of the ON / OFF
three external
relays controls
HOOD HEATERS
Hood heater ON / OFF
automatics is
switched either
on or off.
114___________________________________________________________________ M210543EN-B
Min. / Max. Fault
10 V / 14 V <10.0 V
>14.0 V
'+-12 V
POWER
ERROR'
-14 V / -10 V <-14.0 V
>-10.0 V
'+-12 V
POWER
ERROR'
< 64 Hz
'DRD ERROR'
4 cd/m² / 'LUMINANCE
20000 cd/m² SENSOR
ERROR'
-
-
Description Action
DC/DC converter 1) Reset
is overloaded or 2) Disconnect
working wrong. transmitter
P12 measurement 3) Change the
may also fail due PWC22
to heavy control unit.
electrostatic
discharge to
®
RAINCAP plate.
DC/DC converter 1) Reset
is overloaded or 2) Disconnect
working wrong. transmitter
M12 measurement 3) Change the
may also fail due PWC22
to heavy control unit.
electrostatic
discharge to
®
RAINCAP plate.
Cable 1) Check
disconnected or connector X7
rain detector and X6 on the
®
RAINCAP short- PWC22
circuits control unit.
2) Change the
RAINCAP
Rain Sensor.
Cable Check
disconnected or connector X3
PWL111 short- pins 1,2,3,4.
circuits
- -
If set to ON state, Heaters can
heater current be tested by
starts flowing when the HEAT ON
ambient command.
temperature goes Warming of
below +2°C and the heater
stops when it foils should be
raises over +5°C. felt by hand. If
not check
powering and
cabling.
®