Error Messages
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| Measured temperature | Displays ''H'' when measured |
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| is too high. | temperature is higher than |
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| 42.2°C or 108.°F. |
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| Measured temperature | Displays ''L'' when measured |
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| is too low. | temperature is lower than |
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| 32.0°C or 89.6°F. |
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| Ambient temperature | Displays ''H'' in conjunction |
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| too high. | with the ''▲'' when ambient |
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| temperature is higher than |
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| 40.0 °C or 104.0 °F. |
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| Ambient temperature | Displays ''L'' in conjunction |
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| too low. | with the ''▼'' when ambient |
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| temperature is lower than |
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| 10.0 °C or 50.0 °F. |
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| Error function display. | When system malfunctions. |
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| Please check if the battery |
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| Blank display. | has been installed correctly. |
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| Also check polarity (<+> |
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| and |
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| If the steady battery |
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| Low battery | symbol is the only |
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| symbol shown on the | |
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| indication. | |
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| display, the battery should | |
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| be replaced immediately. |
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