Installation Guide

ENGLISH

Power Up

1. Double check the wiring. Be sure there are no stray wires or wire strands at the connections.

2. Turn on power to the transformer and system. The display will show the current thermostat

settings.

3. Press [TEMP], then press [MORE].

4. Scroll to Fan and press [OK].

5. Set the fan to On. Press [OK] and then press [Back]. The fan should turn on.

6. Navigate back to the Fan screen and set the fan to Auto. Press [OK] and then press [Back]. The

fan should turn off.

7. Press [MORE], scroll to Mode, and press [OK]. Set the mode to Heat. Press [OK] and then press

[Back].

8. Raise the desired heat setting above the current temperature. Ensure that the heating unit turns on.

9. Navigate back to the Mode screen and set the mode to Off. Press [OK] and then press [Back]. The

heating unit should turn off.

10. Navigate back to the Mode screen and set the mode to Cool. Press [OK] and then press [Back].

Lower the desired cool setting below the current temperature. Ensure that the cooling unit turns on.

11. Navigate back to the Mode screen and set the mode to Off. Press [OK] and then press [Back].

Ensure that the cooling unit turns off.

12. Navigate back to the Mode screen and set the mode to Auto. Press [OK] and then press [Back].

The EER56000 thermostat works with most single-stage conventional 4-wire HVAC systems (without a

transformer common). However, if the thermostat resets when calling for heat or cool, or if the heat, cool,

or fan relay cannot supply 15 mA to power thermostat without the relay activating, the transformer

common wire or the Wiser Thermostat Auxiliary Power Supply (Part Number EER57100) is required.

About Heat Pump Systems

1. Terminal 5 (O) is energized for cooling.

Terminal 6 (B) is energized for heating.

In most applications, the reversing valve is energized for cooling and should be connected to the

“O” terminal. If the heat pump requires the reversing valve to be energized for heating, connect the

reversing valve to the “B” terminal.

2. To temporarily disable Energy Efficient Control and heat as quickly as possible, press [HOLD] and

select “On.” The EER56000 thermostat will use the Auxiliary Heat as needed to reach the heat

setting.

3. Terminal 9 (L) is used to indicate a fault with the heat pump compressor. When a compressor fault

is detected, the display will flash red and the “Heat Pump Fault” error message will be displayed.

4. The Emergency Heat Relay (E Terminal) and outdoor thermostats (usually accessories to a heat

pump), are not used. The EER56000 thermostat automatically controls auxiliary heat efficiently. If

the heat pump is equipped with an outdoor thermostat, remove it from the auxiliary heat circuit.