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MODEL 43103 THERMOSTAT INSTRUCTIONS
OPERATION & PROGRAMMING MANUAL
FOR MERMAID DIGITAL THERMOSTAT - 43103

A. INTRODUCTION

When you receive your thermostat you will see a display showing the time of day,
current temperature and below that an up key and a down key. There are several other
keys that you can access, by flipping the "door" down. To do this, locate the serrated
area on the top of the thermostat and pull towards you.

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Summary of Contents for Mermaid 43103

  • Page 1 MODEL 43103 THERMOSTAT INSTRUCTIONS OPERATION & PROGRAMMING MANUAL FOR MERMAID DIGITAL THERMOSTAT - 43103 A. INTRODUCTION When you receive your thermostat you will see a display showing the time of day, current temperature and below that an up key and a down key. There are several other keys that you can access, by flipping the “door”...
  • Page 2 B. SETTING TIME OF DAY AND DAY OF WEEK 1. To set the time of day, start by depressing the hour key until the current time is displayed. Note that AM or PM will be displayed in the lower left hand portion of the display.
  • Page 3 (Note; if you do not press the hold key the thermostat will bring the cabin down to the set temperature, shut off, and not come back on.) D. USING THE THERMOSTAT IN THE HEAT MODE 1. Slide the lever marked heat-off-cool to the heat position; this will be to the left of the off position.
  • Page 4 10. Repeat above process if you wish to have a third and fourth on/off program installed. If no additional programming is desired, simply depress the return key and the single programmed feature will remain constant for the week. 11. The thermostat will now come on and off each day at the times you have programmed.
  • Page 5 This method will not eliminate your programs from the memory banks of the computer. MERMAID MANUFACTURING 2651 PARK WINDSOR DRIVE, SUITE 203 FORT MYERS, FL 33901 239-418-0535 - PHONE 239-418-0538 –FAX...

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