8
MANUAL DEFROST CYCLE ACTIVATION
To manually activate the defrost cycle, hold down the key for 5 seconds.
If the defrost conditions are not satisfied:
- the parameter OdO ≠ 0 (EWPlus 902/961/971/974)
- the evaporator probe Pb2 temperature is higher than the defrost end temperature (EWPlus 971/974)
the display will flash 3 times, to indicate that the operation will not be carried out.
DIAGNOSTICS
Alarms are always indicated by the buzzer (if present) and the alarm icon .
To switch off the buzzer, press and release any key, the relative icon will continue to flash.
NOTES: If alarm exclusion times have been set (see ‘AL’ folder in the parameters table) the alarm will not be
signalled.
A probe 1 (Pb1) malfunction alarm will appear directly on the display with the
indication E1.
Models EWPlus 971/974: A probe 2 (Pb2) malfunction alarm will appear
directly on the display with the indication E2.
MECHANICAL ASSEMBLY
The instrument is designed for panel mounting. Make a hole of 2-13/16” x 1-1/8” (71x29mm), insert the ins-
trument and fix it using the brackets provided. Do not mount the instrument in humid and/or dirty places; it is
suitable for use in ordinary polluted places. Ventilate the place in proximity to the instrument colling slits.
74 mm
32 mm
29 mm
71 mm
70 mm
59 mm
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