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Replacing an Electric Heater
Prerequisites
- An electric heater needs to be replaced.
- A spare electric heater of the same model is available and functional.
- Tool: Phillips screwdriver
Procedure
- Tap Shutdown on the home screen of the controller. Turn off the active power switch QF1 and standby power switch QF2 (you do not need to turn on the standby switch QF2 for the model with a single power supply), and drive switch QF3.
Exercise caution because the device is still energized after it is shut down on the controller home screen.
- Open the front door, disconnect the fan terminals, and remove the fan support.Figure 6-43 Removing a fan support
- Cut the cable ties that secure the electric heater terminal and remove the terminals.
- Unscrew the four screws on the single electric heater, as shown in Figure 6-44.
- Install the new electric heater in the reverse order of the removal.Figure 6-45 Installing a new electric heater
- Install the fan support and connect the terminals.Figure 6-46 Installing a fan support
- Power on the system. On the main screen, choose . Manually start the electric heater, and check that the electric heater works properly. Then exit from the diagnostic mode.
- Power on the device. On the LCD home screen, choose , and clear the electric heater runtime.
- Tap Start on the home screen and check that the smart cooling product is running properly and no alarm is generated.
If the indoor fan is maintained after you tap Start, manually clear the alarm.
