49
ENG
µchiller +0300053EN rel. 2.2 - 14.12.2021
User interface
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7. Press DOWN: the function for swi-
tching from cooling (C) to heating
(H) mode (ModE) is shown - for
heat pump units only.
8. Press DOWN: the manual defrost
function (dFr) is shown - Service
level and reverse-cycle A/W units
only.
9. Press DOWN: the function to dele-
te the alarm log (ClrH) is shown
– Service level only.
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10. Press DOWN: the unit of measure
selection (UoM) is shown
11. After having completed the set-
tings, to exit either:
– from the categories press ESC
and then PRG;
– press PRG for 3 s
4.3.3 Programming mode
Go to the standard display and press PRG to enter programming mode.
Procedure
Press:
• PRG to access the parameters with password protection;
• UP and DOWN to scroll and set the parameters;
• PRG to change the parameter value and save the changes;
• PRG (3 s) or ESC to return to the standard display.
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1. Go to the standard display 2. Press PRG: the password prompt
(PSd) is shown
3. Press PRG: the fi rst digit of the pas-
sword fl ashes; set the value, press
PRG. The second digit now fl ashes;
enter the other digits to complete
the password.
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4. Press PRG: if the password is cor-
rect, the fi rst parameter category
is shown: PLt (= system)
5. Press PRG: the fi rst parameter is
shown: U002 (Pump 1 manual
control)
6. Press PRG: the value fl ashes; press
UP/DOWN to change the value;
PRG to confi rm.
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Note: User password: 1000; Service
password: 2000; Manufacturer pas-
sword: 1234. See the parameter table.
7. Press UP/DOWN to display the
other parameters.
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