VisionPRO
®
IAQ
27 69-1815EFS—08
If you have difficulty with your thermostat, please try the following suggestions.
Most problems can be corrected quickly and easily.
Display is blank
W ,)'/'-6'9-8&6)%/)6%2(6)7)8-*2)')77%6=¯
W %/)796)43;)67;-8',%8,)%8-2+§'330-2+7=78)1-732¯
W %/)796)*962%')(336-7'037)(7)'96)0=¯
No response to
key presses (or
temperature will
not change)
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Make sure heating and cooling temperatures are set to acceptable ranges:
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W 330»¶±l83ººl©²±l83´¸lª
Backlight is dim W (-1(-740%=-72361%0¯))(:%2')(*92'8-320280 on page 22 for
backlight options.
“Err” appears
on screen
W Contact your contractor. Your equipment may need service or repair.
In case of difficulty
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