ABB ACH550-UH HVAC User Manual

ACH550 Installation, Operation and Maintenance Manual 77
ACH550 E-Clipse Bypass
Error messages
Maintenance
See Maintenance for the ACH550-UH on page 31.
# Error Message Description
1 CAN’T EDIT
PAR IS READ ONLY
Try to save value (=press the ENTER key in Parameter Edit State) of a read-
only parameter. E.g. try to change value PAR 01.02 INPUT VOLT
2 CAN’T EDIT
WHEN STARTED
Try to change value of a parameter, which is allowed to be changed only when
system is not started. E.g. PAR 16.02 RUN ENABLE
3 CAN’T EDIT
UP+DOWN ONLY
Try to change value of a “reset only” parameter other than zero. UP+DOWN
buttons must be pressed simultaneoulsy for requesting default value of the PAR
on the display (value zero), and after that ENTER pressed for saving it (reset
the parameter). E.g. PAR 04.01 LAST FAULT
4 CAN’T EDIT
INP VOLTAGE LOW
Input voltage too low. Changing of parameters prohibited since system cannot
save values to nv-mem w/ insufficient voltage.
5 CAN’T EDIT
PAR IS HIDDEN
Try to save value (=press the ENTER key in Parameter Edit State) of a hidden
parameter. Should not be possible. If hidden parameters are turned visible, this
message is not given.
6 CAN’T EDIT
UNDER LO-LIMIT
Try to save value which is over LO-LIMIT of the parameter. Should not be
possible when changing parameters from control panel.
7 CAN’T EDIT
UNDER HI-LIMIT
Try to save value which is over HI-LIMIT of the parameter. Should not be
possible when changing parameters from control panel.
8 CAN’T EDIT
ENUM VAL ONLY
Try to save value which is out of enumerated value list. Should not be possible
when changing parameters from control panel.
9 CAN’T EDIT
NO DEFAULT
Try to request default value (=press UP and DOWN buttons simultaneously) for
a parameter which is defined not to have a default value. Should not be
possible when changing parameters from control panel.
10 CAN’T EDIT
TRY AGAIN.
Parameter system is busy, e.g. application macro change is in process at the
same time when someone is trying to save a value for a parameter. Should not
be possible when changing parameters from control panel.

ABB ACH550-UH HVAC Specifications

General

Brand	ABB
Model	ACH550-UH HVAC
Category	Controller
Language	English