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TROUBLESHOOTING
Control Panel Does Not Work
1. Check Power Supply for appropriate voltage.
2. If the power supply voltage is OK, but the control panel does not work, the 24V thermostat could be fauty. Check the ther-
mostat.
3. To check the control panel, press and hold the [Cool] and [up] keys simultaneously for 5 seconds. LED will show 'P' charac-
ter. If the panel has a strange character displayed, the PCB inside is faulty. Replace the control panel.
Figure 702
63
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