MAINTENANCE
The ST620 thermostat requires no special maintenance. Periodically, the outer casing can be wiped
clean using a dry cloth (please DO NOT use solvents, polishes, detergents or abrasive cleaners, as
these can damage the thermostat). There are no user serviceable parts within the unit; any servicing
or repairs should only be carried out by Salus Controls or their appointed agents.
Should the ST620 thermostat fail to function correctly, check:
• Thermostat batteries are the correct type, fitted correctly and are not exhausted -
fit new batteries if in doubt.
• Heating system time switch or programmer is switched on.
• If the ST620 is still not functioning correctly, press the Reset Button.
WARRANTY
Salus Controls warrants that this product will be free from any defect in materials or workmanship,
and shall perform in accordance with its specification, for a period of two years from the date of
installation. Salus Controls sole liability for breach of this warranty will be (at its option) to repair or
replace the defective product.
ST620 INSTRUCTION MANUAL22
PRODUCT SPECIFICATION
Model: ST620
Type: Electronic non-programmable thermostat,
designed for Volt Free heating applications.
CLOCK
Type: Radio Controlled (RCC) MSF (UK Version).
Reception Frequency: 60 kHz ± 300 Hz
Display Modes: 12 or 24 hour clock display.
PROGRAMMING
Programming Modes: User selectable for 5/2 or 7 day option
Number of Programmes: Six (6) user programmes plus factory default programme.
Override Facility: User selectable programme override facility.
Holiday Facility: User selectable option to temporarily override
selected programme.
