OTHER FUNCTIONS AND CONTROLS
Backlight
The backlight of the RT500 is switched on automatically whenever any of the
keys are pressed. The backlight will remain illuminated for a few seconds
after the last key press.
The backlight will not illuminate if the battery voltage is low.
Battery Status
The RT500 checks the battery voltage frequently during normal
operation. If the battery voltage is sensed as being low, the low battery
indicator will be displayed on the screen.
Although the programmable thermostat will continue to operate normally
at this stage, you should replace the batteries as soon as possible to prevent
any possible operating problems.
Reset Button
The Reset Button is provided as a way to restore the programmable
thermostat to its default factory settings. Pressing this button will delete
any previously entered settings.
Sleep Mode
By pressing both the UP and DOWN keys together for a few seconds, the
RT500 will enter SLEEP mode. In this mode, all of the functions will be
paused to save battery power, with the exception of the clock which will
continue to run in the background.
While in SLEEP mode:
• The LCD display will be blank.
• All output from the RT500 will be turned off immediately.
Press any key to wake up the RT500 and exit SLEEP mode.
RT500BC INSTRUCTION MANUAL
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Salus RT500BC Boiler Control 026_89 21/01/2012 18:18 Page 23
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