Installation, user and maintenance manual
– GAHP-A
21
To reset the controller errors, select menu 2, as indicated in the Section "Accessing the
Menus"; Then:
1. The display shows: "2." press the knob to access the menu. The display initially
shows item "2. 20".
2. Turn the knob clockwise to display item "2. 21".
3. Press the knob to display the fl ashing reset request: "rEr1".
4. Press the knob again to perform a board error reset. The reset request stops fl ashing,
and the display again shows "2. 21". The reset operation has been performed.
5. To quit the menu, turn the knob clockwise until the "2. E" is displayed. Now press
the knob to return to menu selection: "2.".
6. To exit the menu selection and return to the normal visualisation of the parameters
of the appliance, turn the knob clockwise until "E" displays; press the knob to quit.
ACTION "22"
Manual defrosting; the execution of the manual defrosting command, provided that the
conditions exist (these are verifi ed electronically), allows the fan coil to be defrosted,
overriding software control regarding the timing of this operation.
Defrosting mode is managed automatically by the on-board electronics and is activated
only under specifi c operating conditions (the on-board electronics verify the appropriate
requirements).
You will need:
access to the electrical panel, see Section“Display and knob”.
To execute the manual defrosting command, select menu 2 as described in the Section
"how to access the menus", then proceed as follows:
1. The display shows: "2." press the knob to access the menu. The display initially
shows item "2. 20".
2. Turn the knob clockwise to display "2. 22".
3. Press the knob to display the manual defrosting fl ashing request: "deFr".
4. Press the knob again to execute the command. The manual defrosting request
stops fl ashing, and the again display shows "2. 22". The manual defrosting opera-
tion has been performed (if the appropriate requirements are satisfi ed).
5. To quit the menu, turn the knob clockwise until the "2. E" is displayed. Now press
the knob to return to menu selection: "2.".
6. To exit the menu selection and return to the normal visualisation of the parameters
of the appliance, turn the knob clockwise until "E" displays; press the knob to quit.
3.4
OPERATING SETTINGS
The operations described require basic knowledge of the plant installed and of the S61
controller fi tted to the appliance; before proceeding, you must acquire this informa tion,
Section 3.2 ON-BOARD ELECTRONICS on page 17.
At the moment of installation, the appliance is set up by the installation technician for
best operation according to the type of plant installed. Subsequently it is possible to
modify the operating parameters, but this is not recommended if not in possession
of the necessary knowledge and experience in order to do so. In any case, to set new
operating parameters for the appliance see Section 4.8 PROGRAMMING OF HYDRAULIC
PARAMETERS on page 34.
