Technical data

Maintenance, troubleshooting, spare parts and dismantling
36 – EN ACT 600 – 5000
SYMPTOM POSSIBLE CAUSE - SUGGESTED ACTION
 Electronic
instrument
DMC24
The led
is
on or flashes.
 With
led flashing: one or more service warnings are active.
 With
led lighted: one or more service warnings are waiting to be reset. The
display shows the DewPoint temperature and the active or not reset service
warning.
 The service warnings are displayed with the following messages :
1.
: PF1 – temperature probe failure T1 (DewPoint) – verify electric wiring
and/or replace probe.
2. : PF2 - temperature probe failure T2 (air IN) – verify electric wiring and/or
replace probe.
3.
: PF3 - temperature probe failure T3 (compressor suction) – verify electric
wiring and/or replace probe.
4.
: Hdp – DewPoint too high (higher than set HdA value) – see specific
paragraph.
5.
: Ldp - DewPoint too low - see specific paragraph.
6.
: drn – the condensate drainer does not work properly (DRN contact open- if
electronic drainer is installed) - see specific paragraph.
7.
: SrV - Service – maintenance notice time expired (parameter SrV) – carry
out planned maintenance and reset hour counter.
8.
: dt – compressor supply temperature too high (probe T4) – see specific
paragraph.
9.
: HCP – condensing pressure too high – see specific paragraph.
NOTE: after solving the problem, the services must be reset (press the keys
log
reset
simultaneously for at least 3 seconds).