New Zealand Thermostat Underline Heating Kit User Guide

Underline Manual: Questions and Answers

What does the Er symbol mean on my Underline thermostat display?

The sensor is not installed or there's an error. User Guide, p. 5

What do the M and tick buttons do on Underline?

M is the mode and menu button. The tick icon confirms selections.

What's the difference between manual and program mode on Underline?

Manual mode lets you switch heating on and off when you choose. Program mode runs on an automatic schedule. User Guide, p. 5

How do I set up my Underline thermostat to run on a schedule?

Tap the M icon until a clock appears next to the temperature, then hold M for 5 seconds to enter programming mode.

1. Set times and temperatures for P1 (morning on), P2 (morning off), P3 (evening on) and P4 (evening off) for weekdays using the arrows and M to confirm each.
2. Follow the same steps to program Saturday and Sunday.
3. Tap the tick icon when fully completed. User Guide, p. 3

Can I lock the keypad on my Underline thermostat to prevent unauthorized changes?

Yes. Press and hold the power button for 5 seconds until a lock symbol appears. Repeat to unlock. User Guide, p. 6

How do I return my thermostat to factory settings?

Turn the thermostat off, then navigate to Menu 13 and hold the down arrow for 5 seconds.

1. Turn the thermostat off.
2. Press and hold the M icon for 5 seconds until Menu 11 appears.
3. Tap the M icon repeatedly until Menu 13 appears.
4. Press and hold the down arrow button for 5 seconds. User Guide, p. 6

How do I switch Underline to floor sensing mode?

Turn off the thermostat, tap the M icon once, use arrows to select F, press the tick icon, then turn it back on.

1. Switch the thermostat to off.
2. Tap the M icon once (do not hold).
3. Use the arrows to change the display to F.
4. Press the tick icon to confirm.
5. Switch the thermostat back on. User Guide, p. 8