8
Code: 02250145-- 604 SR-- 250 --- SR -- 3000
English
8
PI --- Compressor integral protection alarm (from models 60 (1650) to 110 (3000)
m3/min (scfm))
When the internal t emperature of the fridge compressor motor rises above the limit
value the compressor itself is stopped to avoid overheating risks. The display will
alternate between the alarm code initials HP and PI.
When the correct operating temperature is reached, the fridge compressor can be
restarted, pressing the reset key.
St --- Refrigerant gas high temperature alarm
When the high temperature thermostat triggers the fridge compressor is stopped.
The display will show the St alarm code. Once the cause is removed and the pressure
switch has been reactivated by hand, press the reset key to eliminate the alarm.
Ld --- Low dew point temperature alarm
During operation, if the dew point temperature falls under 28˚F(-- 2˚C) for more
than 3 minutes, the fridge compressor is stopped and the display will alternate bet-
ween the Ld alarm code and the temperature value. Press the reset key to eliminate
the alarm.
Hd --- High dew point temperature warning
During operation of the dryer, if the temperature exceeds the value of the Ht para-
meter (see para. 4.3 point 7) for more than 3 minutes, the compressor continues to
run and the display will alternate between the Hd alarm code and the temperature
value. The alarm LED flashes.
This warning is automatically reset when the dew point temperature falls 3.6˚F
(2˚C) below the (Ht) value.
F S --- O u t o f s c a l e w a r n i n g
This warning indicates that the temperature detected exceeds the limits of the
display, which are 16˚F(-- 9˚C) and 99˚F(+37˚C) respectively.
AS --- Temperature sensor fault warning
When this warning triggers, the temperature sensor T0 is faulty (open or short---cir-
cuited).
The fridge compressor continues to operate. The alarm LED flashes.
EP---Eeprom error
This signal indicates microprocessor failure. The “EP” code will be displayed.
Themicroprocessormustbereplaced.
Er---Switching on error
When the on off key is pressed and the control panel is in the rem ote off condition
(yellow LED lit), the Er error code will a ppear on the display for 2 seconds.
ALARM/WARNING
trips
The alarm LED illuminates or flashesS
The alarm or warning code is displayedS
The alarm LED switches offS
The alarm code is clearedS
The unit returns to normal
operating mode
PRESS
problem persists
ALARM trip/reset sequence
problem
solved
display
reset
alarm
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