AERMEC URHE CF Series, User Manual

Page: 11 / 16

User Manual - URX_CF and URHE_CF -
11
Diagnostics
The control can perform a full diagnostics of
the unit by reporting a series of alarms. The
activation and reset modes are set via the fac-
tory parameters.
For some alarms, the notification exclusion
is provided for a length of time preset via a
parameter.
The manual reset alarms can be reset by
pressing and releasing the arrow key down-
wards.
A manual reset alarm entails the block of the
corresponding functions and the operator's
intervention on the unit.
List of alarms
The activation of an alarm results into two
actions:
• block of the interested users
• notification on the keyboard display
ALARM CODE DESCRIPTION
AL01
Compressor maximum number of hourly activations exceeded
AL22
High pressure on the cooling circuit alarm
AL23
Low pressure on the cooling circuit alarm
Er01/Er20
Wrong regulation temperature probe
Er04
Clock error
Er05
Anti-freeze
Er08
Remote panel communication error
Er10
Compressor thermal protection error / high pressure from digital input alarm
Er11
Fan thermal protection alarm
Er21
Outside temperature probe error
Er41
Exceeded maximum number of hours set for filters
Er50
Low pressure probe error
Er51
High pressure probe error
The notification consists of an “Ernn” or “ALnn”
type of code (nn shows a 2 digit number that
identifies the type of alarm, e.g.: E01, AL23,