BRA2 - BRN2
EN
32
DISPLAYING ALARMS
I A
FAULT
CAUSE
SOLUTION
Values display indication
Er01
High pressure switch tripped, manual reset
after 3 activations in one hour, incorrect
connection of power supply phases (three-
phase models only)
Check fault (see high discharge pressure)
Reset manually
Change the position of two phases.
Values display indication
Er05
Low pressure switch tripped manual reset
after 4 activations per hour
Check fault
Values display indication
Er30
System frost prevention alarm (manual
reset)
Check water outlet temperature
Check water flow
Check temperature set point
Check correct positioning of sensor BT2
Values display indication
Er20
Differential pressure switch or flow switch
tripped
Manual reset if active for more than 30
seconds
Check inadequate water flow
Check for air in water circuit
Check electrical connection (see unit wiring dia-
gram)
Values display indication
Er 10
Fan circuit breaker tripped
Manual reset if active for more than 30
seconds
Check correct sequence of power supply phases
(versions 0071-0121)
Display indication
Er47
HSW15 communication error with remote
keypad (only if remote keypad featured)
Check electrical connection
Values display indication
Er60
Faulty BT1 system water return sensor
(automatic reset)
Check electrical connections
Replace component
Display indication
Er75
Pressure transducer malfunction
Check electrical connection (see unit wiring dia-
grams)
Replace component
Display indication
Er81
Compressor maintenance interval
Check operating pressure
Check condition of the compressor
Reset the clock
Display indication
Er85
Water pump maintenance interval
Check condition of the water pumps
Reset the clock
Display indication
Er90
Maximum alarm log size exceeded
Reset alarm log
(paragraph "Reset alarm log")
Values display indication
Er61
Faulty BT2 system water outlet sensor
(automatic reset)
Check electrical connections
Replace component
Display indication
Er46
Set the clock
See procedure on p. 24
Summary of Contents for BRA2 0021
Page 40: ...COD C01002793C_02...
