Ferroli RGA ST, Installation And Operation Manual

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45
Table of alarms
Notes:
(1) A = automatic reset, M = manual reset
(2) Only when the alarm becomes manual reset
Er05 Low pressure – Sequence meter - Fans thermal protection
The alarm becomes manual reset when the number of events per hour is more than 3.
The alarm is bypassed for 120 seconds from activation of the compressor or the reverse cycle valve.
Er10 Compressor 1 thermal protection
The manual-reset alarm intervenes in the event of activation of the compressor 1 thermal protection or the thermostat located on the
outlet of the compressor 1.
ER11 Compressor 2 thermal protection
The manual-reset alarm intervenes in the event of activation of the compressor 2 thermal protection or the thermostat located on the
outlet of the compressor 2.
ER10 ER11
* Compressor 1 thermal protection - Compressor 2 thermal protection - High pressure switch (PAA)
The manual-reset alarm intervenes in the event of activation of the compressor 2 thermal protection or the thermostat located on the
outlet of the compressor 2 AND in the event of activation of the compressor 1 thermal protection or the thermostat located on the outlet
of the compressor 1 and/or more likely it means the auto-reset high pressure switch (PAA) trips in.
Er20 Differential pressure switch
The alarm is activated if the associated digital input remains activated for at least 5 seconds and automatically resets if the
digital input remains not activated for at least 3 seconds. The alarm becomes manual reset if the digital input remains activated
for more than 10 seconds.
The alarm is bypassed for 30 seconds from pump activation.
Er30
Antifreeze
The alarm is bypassed for 3 minutes from switching on of the unit (in heating mode only).
Er62 Liquid probe fault
When the alarm is activated the fans work with on-off logic by compressor request. The defrost input and output are managed
according to compressor operation time.
Er68
Outside air probe fault
When the alarm is activated, climate adju stment in heating and dynamic defrost are unavailable.
Er90 Maximum number of recordings in alarms history exceeded
Indicates that the alarms history buffer is full. Every new alarm will be memorised, cancelling the oldest alarm.
* Note: The manual-reset high pressure (PAM) does not have reference on the control display so you can not identify it through
the internal diagnostics as it acts directly on contactors, it may happen that the control display does not signal any error but
the compressors are however still, in this case rearm the manual-reset high pressure switch by pressing the button located at
the top of the switch.
ADJUSTMENT AND CONTROL
Code Alarm
T
ype of alarm
input
COMPRESSORS
EXCHANGER F
ANS
(WITH LOSS)
PRIMAR
Y
CIRCUIT
PUMPS
EXCHANGER
RESIST
ANCES PRIMAR
Y
AUXILIAR
Y
OUTPUT
Er05
Low pr sequence meter + fans thermal switch A/M (2) ID3 OFF OFF
Er10
Compressor 1 thermal protection M ID1
OFF
comp.1
Er11
Compressor 2 thermal protection M ID2
OFF
comp.2
Er20
Primary circuit water differential pressure switch A/M ID6 OFF
OFF if
manual-
reset
OFF
Er21
Primary circuit pump 1 thermal protection M ID4 OFF OFF OFF p.1 OFF
Er22
Primary circuit pump 2 thermal protection M ID5 OFF OFF OFF p.2 OFF
Er25
Recovery water differential pressure switch M DIE2 OFF OFF ON OFF
Er26
Recovery pump 1 thermal protection M DIE3 OFF OFF ON OFF
Er30
Primary circuit antifreeze M AI2 OFF
Er45
Clock fault error A
Er46
Clock to be set error A
Er47
Remote keyboard communication error A
Er60
Primary exchanger inlet water temperature probe fault A AI1 OFF OFF OFF OFF OFF
Er61
Primary exchanger outlet water temperature probe fault A AI2 OFF OFF OFF OFF OFF
Er62
Liquid temperature probe A AI3
Er63
Recovery inlet water temperature probe fault A AI1 OFF OFF OFF OFF OFF
Er64
Recovery outlet water temperature probe fault A AI2 OFF OFF OFF OFF OFF
Er68
External air temperature probe fault A AI4
Er80
Configuration error A OFF OFF OFF OFF OFF
Er90 Recordings for alarms history exceeded signalling M
High pressure