Disabling/Enabling Time Periods; Choosing The Operating Mode; Override And Extra Hour Functions; Other Functions - Honeywell ST9400A User Manual

MINI-PROGRAMMER OPERATING INSTRUCTIONS
Disabling / Enabling Time Periods
To disable any of the time periods ON 1 to OFF 1 or ON 2 to OFF 2, simply set the
ON time and its paired OFF time to the same time, and the programme will just
ignore them.
To re-enable the time period, simply set the two ON and OFF times to be different.

Choosing the Operating Mode

In a Mini-Programmer, some Operating Modes are not possible. For example,
HEATING in AUTO mode and HOT WATER in OFF mode is not allowed. When
configured, your ST9400A knows which combinations of Operating Mode are
possible, and only permits those combinations that are allowed.

Override and Extra Hour Functions

When you use the hot water OVERRIDE or EXTRA HOUR functions, they will
operate as normal. However, the heating OVERRIDE or EXTRA HOUR functions will
also bring on the hot water. This is a consequence of the type of system you have,
and is perfectly normal.

Other Functions

All other functions operate the in the same way as for the standard ST9400A.
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