AV30 PRE-INSTALLATION REQUIREMENTS | AV30 Pre-Installati on Requirements | v. 3.0
22 / 37
the unit should begin to cycle again.
12. Repeat Steps 11-14 until all the air out of the system. You will know when the
compressor turns on. Now the system is Primed and ready to go.
Troubleshooting
If you do not see ALRN after pressing “menu” toggle between “set” and “menu” until ALRN
appears on the screen.
Alarm Reset Procedure
It is necessary to understand that any alarm is a condition which is protecting the
chiller from serious damage. Repeatedly resetting the alarm without correcting the
problem can lead to serious, if not catastrophic, damage which will void the
warranty of the chiller.
If you are not sure, contact MTA at
service@mta-usa.com
or 716-693-8651.
Alarm Resets and Other Important Info (PDF) [5 MB]
Alarms display and reset
To open the functions menu, proceed as follows:
MENU
• Open the functions menu by pressing the MENU button
• With the up or down buttons, select the alarm function.
• Press SET
• If no alarms are present, pressing the SET button is not enabled.
• The lower display shows the label with the alarm code; the upper display, if the alarm is
resettable, shows the label
rSt,
or
NO
if the alarm condition is still present.
SET
• Pressing SET with
rSt
present, will reset the alarm. Continue this through all alarms until it
is clear and the chiller is ready to start.
• If you want to scroll through all alarms present, use up or down buttons
Alarm codes
CODE
DESCRIPTION Cause
Reset
Alarm trip
“AP” Alarms
Probe Fault
Bad probe
broken lead
Auto
Instantaneously
AEFL
Evaporator
Water level
alarm
Low water level Auto/ Manual
Delayed
ALc1
Phase Monitor
alarm
Wrong or missing
phase
Auto/ Manual
Instantaneously
b (n) HP
Compressor
(circuit number)
High pressure
Fan? Condenser
Blocked
Manual
Instantaneously
