41653_model43558.pmd
54
SAFETY FEATURES | 54 |
AC Power Monitor
■This thermostat operates on 24V AC, which is provided by your system’s transformer. If the system loses electricity, then the 24V AC power is lost also.
■The 2 AAA batteries provide backup operation of the clock, as well as all programs and settings.
■If the AC power is lost, then the LCD display will alternate “No AC Pwr” with the day.
■Without AC power, the following functions are disabled:
-The system is turned off.
-The Backlight function is disabled.
-The remote sensor temperature readings are not available.
No AC Pwr | 3 | |
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| Temp |
PM |
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System | Fan |
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Low Battery Warning
Your thermostat has a low battery warning system. When the batteries are detected to be weak, the low battery warning is indicated by “Low Batt” alternating on the LCD display with the day. You then need to replace the batteries with 2 new
AAAalkaline batteries. You have 30 seconds to change the batteries before the set- tings are lost.
Low Batt | 3 |
| Temp |
PM |
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System | Fan |
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Error Mode | 55 |
If the thermostat is unable to control your system due to an unexpected problem, the thermostat will enter Error Mode. In this condition, the thermostat flashes “Error” and a code number on the LCD display, and shuts off your system.
To correct this problem, replace the batteries with 2 new
AAAalkaline batteries, even if you have recently replaced them. Next, use a paper clip to press the RESET button next
to the keypad. You will | Error |
need to reprogram your | |
thermostat and confirm |
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normal operation. |
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If Error Mode returns, please call Climate Technology Tech-
nical support at