Riello TAU 150 UNIT, Installation And Maintenance Manual

Page: 50 / 72

TECHNICAL ASSISTANCE SERVICE 50
Error
code via
QAA
Diagnostic
info
Description of error Type of fault System action Procedure
50 462
DHW 1 temperature
sensor error
Short circuit and fault in
DHW temperature sensor
(B3)
Message
Check/replace
temperature sensor
52
148 DHW 2 sensor error
Short circuit in DHW
temperature sensor (B3)
Message
Check/replace
temperature sensor
52 149 DHW 2 sensor error
DHW temperature sensor
(B3) faulty
Message
Check/replace
temperature sensor
61
126 Room unit 1 error No further differentiation Message
Check/replace room unit,
room temperature sensor
61 382 Room unit 1 error No further differentiation Message
Check/replace room unit,
room temperature sensor
61 383 Room unit 1 error No further differentiation Message
Check/replace room unit,
room temperature sensor
61 384 Room unit 1 error No further differentiation Message
Check/replace room unit,
room temperature sensor
61 385 Room unit 1 error Software error detected Message
Check/replace room unit,
room temperature sensor
61 386 Room unit 1 error Unknown message type Message
Check/replace room unit,
room temperature sensor
61 387 Room unit 1 error No further differentiation Message
Check/replace room unit,
room temperature sensor
61 471 Room unit 1 error
Unknown datapoint
request from room unit
Message
Check/replace room unit,
room temperature sensor
61 472 Room unit 1 error
Room unit waiting to
write to write-protected
parameter
Message
Check/replace room unit,
room temperature sensor
62
438
Room unit 1 or timer
connection error
Connection error Message
Check connection
to room unit/timer-
thermostat. Unit not
recognised
73
609
Solar collector sensor
error (if solar clip-in
option is installed -
accessory)
Valid temperature for
solar collector not
available
Message
Check solar clip-
in; check/replace
temperature sensor
77 156
Air pressure sensor error
(not used)
Short circuit in
temperature sensor
Message
Check/replace air
pressure switch
77 157
Air pressure sensor error
(not used)
Pressure switch faulty Message
Check/replace air
pressure switch
78
154
Water pressure sensor
error (not used)
Short circuit in pressure
switch
Message
Check/replace water
pressure switch
78 155
Water pressure sensor
error (not used)
Pressure switch faulty Message
Check/replace water
pressure switch
78 510
Water pressure sensor
error (not used)
Water pressure too high
or too low, or reading not
plausible
Burner lockout
(permanent). Lockout
reset required
Check/replace water
pressure switch
78 511
Water pressure sensor
error (not used)
Reading not plausible Safety shutdown
Check/replace water
pressure switch
81
518 LPB communication error
LPB circuit short
circuited or not powered
Message
Check the LPB
connection. Check the
power supply to the
control card
82
519 LPB address error LPB address conflict Message
Check the LPB
connection
91 131 EEPROM data loss Hardware fault
Burner lockout
(permanent). Lockout
reset required
Contact Technical
Assistance Service
91 258 EEPROM data loss
Data overflow caused
by power failure during
functioning
Burner lockout
(permanent). Lockout
reset required
Contact Technical
Assistance Service
91 268 EEPROM data loss Hardware fault
Burner lockout
(permanent). Lockout
reset required
Contact Technical
Assistance Service
91 583 EEPROM data loss
EEPROM read/write test
error
Burner lockout
(permanent). Lockout
reset required
Contact Technical
Assistance Service