28
Display, continued
Meaning of the
LEDs,
continued
LEDs Description
+ +
The constant green Lightning indicates that power is con-
nected to the unit. The Drop and the Triangle are flashing
on and off in green and red, respectively, to indicate that the
condenser sensor has sensed a failure.
If the low-pressure pressostat registers a too low pressure
in the cooling circuit, caused by a too low temperature
across the evaporator, the unit will be stopped until the re-
quired pressure has been re-established and the low-
pressure pressostat then switches on the unit again.
After resetting, the Triangle is switched off and the Drop
continues to flash on and off. The Lightning is constantly
green.
+
When the Drop flashes on and off in green and the Lighting
is constant green, this indicates that the unit is working but
there has been a failure on the unit through the LP
pressostat.
The flashing Drop is switched off by turning the unit OFF
and ON on the main switch.
+ +
A constantly green Lightning indicates that power is on. The
Drop and the Triangle LEDs flash on and off in green and
lights up constantly in red, respectively, to indicate that the
HP pressostat or the thermal relay has switched off the
compressor and that the unit has been cut off.
If the high-pressure pressostat has registered a too high
pressure in the cooling circuit, caused by a too high tem-
perature across the condenser, the compressor will be
switched off and the unit stops. The thermal relay also
switches off the compressor and stops the unit, if the tem-
perature in the compressor gets too high. If the unit
switches off again after having reset the HP pressostat and
the thermal relay, the unit must be checked by a service
engineer. (See section 7. Faults and how to remedy them).
The flashing Drop is switched off by turning the unit OFF
and ON on the main switch.
Continued overleaf
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