Fast RCF Series, Manual

Heat recovery unit with cooling circuit - 

RCF

 -

0208-6180549-rev. 02

14

GB

Controls manual 

List of alarms

When  an  alarm  is  triggered,  it  has  two 
effects:
• The corresponding loads are shut down

• The alarm appears on the keyboard display

The alarm message consists of an “Enn” code 
(where  nn  stands  for  a  two  digit  number 

CODE

SIGNAL

DESCRIPTION

COMPR.

FAN

ELECTRIC 
HEATERS

RESET

E00

Remote Off

Triggered by the digital input 
configured as “Remote ON-
OFF” (see digital inputs)

OFF

OFF

OFF

E01

High pressure 
(digital)

Triggered by the digital input 
ID1 (see digital inputs)

OFF

ON

Always manually reset.

E02

Low pressure 
(digital)

Triggered by the digital input 
ID2 (see digital inputs)

OFF

OFF
if H22=1

ON
if H22=0

Reset is carried out automatically 
if the number of events per hour 
is equal to parameter A02, other-
vise it switches to manual. 
Not active when time Pa A01 is 
counted after a compressor is tur-
ned on or the 4-way valve (rever-
sing valve) is reversed.
Inactive during defrosting if Pa 
24 = 0

E03

Thermal switch 
protection com-
pressor 1

Triggered by the digital input 
configured as  “Compressor 1 
thermal switch”  (see digital 
inputs)

OFF

ON

Automatically reset unless alarm 
events per hour reaches the value 
of parameter Pa A08, after which 
it is manually reset.
Not active when Pa A07 time is 
counted after a compressor is 
turned on.

E04

Condenser fan 
thermal switch 
protection

Triggered by the digital input 
configured as  “Fan thermal 
switch”  (see digital inputs)

OFF

OFF

Reset is carried out automatically 
if the number of events per hour 
is equal to parameter A09, othe-
rwise it becomes manual.

E05

Anti-freeze

Pa A18 parameter selects the 
alarm probe: Pa A18 = 0   AI1, 
Pa A18 = 1   AI2.
External fans and compressors 
will be shut down;
Active if analogue probe 
selected (see analogue inputs) 
is configured as NTC probe (Pa 
H06=1 or Pa H07=1);
Triggered when probe AI5 
detects a value below Pa A11;
Goes off if the probe detects 
a value greater than Pa A11 + 
Pa A12. 

OFF

Reset is carried out automatically 
if the number of events per hour 
is equal to parameter A09, othe-
rwise it switches to manual.
In Heating mode, it is not active 
while the Pa A10 time is counted 
from start-up of the unit with 
ON-OFF button (see keyboard) 
or with ON-OFF digital input (see 
digital inputs)

E06

Probe AI2 faulty

Triggered if probe AI1, confi-
gured as an analogue input, 
shorts or is cut off or probe 
limits are exceed (-50°C 
...100°C)

OFF

OFF

OFF

that identifies the type of alarm; i.e. E00, E25, 
E39….).