Honeywell ST9400C User Manual

17
Disabling / Enabling Time Periods
To disable any of the time periods ON 1 to OFF 1, ON 2 to OFF 2, or ON 3 to OFF 3,
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 ST9400C 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 ST9400C.
MINI-PROGRAMMER OPERATING INSTRUCTIONS

Honeywell ST9400C Specifications

General

Model	ST9400C
Category	Temperature Controller
Display	LCD
Mounting	Wall-mounted
Number of Channels	2
Contact Voltage	230V AC
Contact Current	3A resistive, 1A inductive
Output Types	Relay
Operating Temperature	0°C to 40°C
Switching times	Up to 3 per day
Power supply	230V AC
Type	Programmable Thermostat