ESI Controls Programmable Room Thermostat RF Wireless ESRTP4RF+

The ESI Controls ESRTP4RF+ is a programmable room thermostat that controls the heating schedule in domestic heating systems. It communicates wirelessly with its receiver, so the unit can be sited in the living space without a hard-wired connection back to the boiler position. Time and temperature are set at the thermostat, and the display alternates between the current room temperature and the time remaining until the next on period, where the letter h denotes the number of hours left.

A temporary override is available at any time using the +/- buttons, which shifts the setpoint without altering the stored programme.

• The thermostat no longer switches the heating at the programmed on and off periods
• The +/- buttons fail to register when a temporary override is attempted
• The setpoint cannot be changed or the stored programme is lost
• The unit stops communicating with its receiver within the normal working range
• The displayed room temperature no longer tracks the actual room temperature

• Confirm the appliance model against the compatibility list before ordering
• Technical settings are normally entered by the installer, so have the commissioning details available
• Note the existing thermostat's part number and the receiver arrangement at the boiler before removal