Troubleshooting - Lennox iComfort S30 Smart Thermostat Operating, Troubleshooting And Technical Cheat Sheet

2.2. Troubleshooting

2.2.1. LED:
A blue LED, mounted on the internal circuit board indicates status.
REMOVE COVER FROM MAG-MOUNT
BY INSERTING A FLAT-HEAD
SCREWDRIVER IN THE SLOTS ON
EACH SIDE OF THE MAG-MOUNT AND
GIVING IT A GENTAL TWIST. THIS WILL
SEPARATE THE TWO SECTIONS.
S
Steady - Mag-Mount is receiving power from the Smart Hub but HD display is not attached.
S
Flashing - Mag-Mount is receiving power from the Smart Hub but is experiencing
some difficulty:
n
It is not communicating with the Smart Hub is the most common issue
n
There has been a software error in the Mag-Mount processor
n
There has been an internal hardware error in the Mag-Mount
S
Off - Possible causes:
n
Mag-Mount is not receiving power from the Smart Hub. Check wiring at Mag-Mount and Smart Hub.
A mis-wiring will not cause any damage but will prevent the system from operating.
n
There has been a serious Mag-Mount internal hardware or software failure which is a very remote
cause.
2.2.2. Electrical Voltages
The Mag-Mount provides 5-VDC to the HD Display at up to 1.5 Amps. The 12VDC supply from the Smart Hub is
reduced to 5VDC using a switching regulator on the PCB inside the Mag-Mount. A 6VDC TVS diode on the
5VDC output line will clamp the output voltage to a safe level if the regulator malfunctions and an over-voltage
condition occurs. The Mag-Mount has the ability to monitor the 5-V current drawn by the HD Display. When the
HD Display is not on the Mag-Mount, the 5VDC regulator is shut down, removing the 5VDC power from the HD
Display connector.
MAG-MOUNT ONCE HD DISPLAY IS INSTALLED. LED WILL
BLUE LED VISIBLE
HERE IF HD
DISPLAY HAS NOT
BEEN INSTALLED
Figure 3. Mag-Mount Blue LED
BLUE LED ONLY VISIBLE THROUGH TOP VENT OF
ONLY APPEAR IF THERE IS NOT A GOOD CONNECTION
BETWEEN THE HD DISPLAY AND MAG-MOUNT. IF
CONNECTION IS GOOD, THERE WILL BE NO LED ON.
ACCESS COVER
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