Salus gives a reboot, a re-pair and a full receiver factory reset for the IT800WIFI, and they do very different things. These steps come from Salus’s iT800 FAQs, set-up article and quick guide.

What This Problem Means

A reboot restarts the WZ600 receiver and keeps your settings. A re-pair links the IT800TX thermostat and the receiver again, which is Salus’s fix for E1 and for a thermostat that has lost its connection to the receiver. A receiver factory reset clears the receiver: Salus says pressing and holding the ZigBee and WiFi buttons for 10 seconds performs it, and Salus gives a factory reset of either unit as the cause of E1. Start with the gentlest option that fits your problem.

Common Symptoms

• E1 on the thermostat
• E2 or a grey Thermostat tile that recharging and moving closer have not cleared
• You want to set the system up again from scratch
• 88.8 on the thermostat screen

Safe Checks You Can Try

1. Reboot the receiver

Power the WZ600 off at the mains, leave it off for about 10 seconds, then switch it back on. Salus says your settings are kept. Try this before any reset.

2. Re-pair: open the ZigBee network

Press a paperclip into the ZigBee (left-hand) pinhole under the receiver for 3 seconds, until the bottom LED flashes blue.

3. Re-pair: put the thermostat into pairing

On the thermostat, hold the button for 3 seconds until “HC” appears. Turn the dial to “Fr”, press, select “Yes” and press again. Salus labels Fr as Factory Reset; it is the thermostat side of Salus’s re-pair.

4. Re-pair: close the network

When the antenna icon on the thermostat stops flashing, press the receiver’s ZigBee pinhole for 3 seconds until the LED turns green.

5. Re-pair through the app instead

Salus’s installation guide also gives an app route: press the left-hand (LHS) pinhole for 3 seconds and add the thermostat in the Salus Premium Lite app.

6. Factory reset the receiver

To start from scratch, press and hold the receiver’s ZigBee and WiFi buttons together for 10 seconds. Salus’s quick guide shows the demand light blinking red while the receiver deletes all its paired devices. Afterwards, re-pair the thermostat using steps 2 to 4.

7. Reconnect the receiver to Wi-Fi if needed

If the Receiver tile is grey afterwards, add the receiver back to your router: turn on Bluetooth on your phone, press the right-hand (RHS) pinhole for 3 seconds and add the gateway in the app.

8. If the screen shows 88.8

Salus says 88.8 means either a unit reset or identify mode. A short press of the receiver’s ZigBee pinhole toggles identify mode.

When To Contact Support

If you have worked through these steps and the problem is still there, contact Salus through its UK technical support portal or its UK contact page, or speak to the installer who fitted your receiver. Have any error code on the thermostat, and what the receiver’s lights are doing, to hand.

Last resort: factory reset. The receiver factory reset in step 6 is the last resort. It clears the receiver’s paired devices, so the thermostat shows E1 until you re-pair it, and you may also need to add the receiver to your Wi-Fi again.