Mitsubishi Electric EHST20C-VM6HA Service Manual page 30

9-2. Service Menu
The service menu provides functions for use by installer or service engineer. It
is NOT intended the home owner alters settings within this menu. It is for this
reason password protection is required to prevent unauthorised access to the
service settings.
From the main setting menu use F2 and F3 to highlight the service icon then
1.
press CONFIRM.
You will be prompted to enter a password. THE FACTORY DEFAULT PASS-
.
WORD IS 0000.
3. Press CONFIRM.
(It takes approx. 30 secs to load the service menu.)
The service menu is navigated using the F1 and F2 buttons to scroll through the
functions. The menu is split across two screens and is comprised of the following
functions;
1. Manual operation
Function setting
.
Thermistor adjustment
3.
Auxiliary setting
4.
Heat source setting
5.
Operation setting
6.
Running information
7.
Thermistor reading
8.
Summary of setting
9.
10. Error history
Password protection
11.
1. Manual reset
In this Installation Manual instructions will be given only for the following func-
tions;
Auxiliary setting
1.
. Manual operation
Heat source setting
3.
Password protection
4.
5. Manual reset
Information on the other functions can be found by consulting the technical or
service manuals.
<General operation>
Many functions can not be set whilst the indoor unit is running. The installer
should turn OFF the unit before trying to set these functions. If the installer at-
tempts to change the settings whilst the unit is running the main controller will
display a reminder message prompting the installer to stop operation before con-
tinuing. By selecting Yes the unit will cease operation and changes can be made
to the service settings.
If text is displayed in white on a black background CONFIRM button must be
pressed to save this choice.
Screen 1 of service menu
Screen  of service menu
System off prompt screen
Action requires confirmation
30
Action is confirmed