BAYweb BW-WT2 Owner's Manual page 27

Problem
Thermostat Keypad shows error code "E1":
The Thermostat Keypad is not communicating
with the Control Module.
Thermostat Keypad shows error code "E2":
The temperature sensor has failed in the
Keypad Module.
Thermostat Keypad shows error code "E3":
Your Internet router is not supplying a local
address to use on your network (DHCP is
inoperative).
Thermostat Keypad shows error code "E4":
The Internet connection was down for an
extended period of time (It is unlikely that this
is a problem with the thermostat).
Thermostat Keypad shows error code "E5":
The non-volatile memory in the control
module has been lost or corrupted.
Thermostat Keypad shows "LO":
The keypad has been locked.
Thermostat not responding to the schedule at
the correct time.
Solution
✔ Check the wiring and connections
between the Thermostat Keypad and
Control module. Make sure all 4 wires
are connected.
✔ Try wiring the Thermostat Keypad
directly to the Thermostat connector of
the Control module. If this works, the
problem is somewhere in the wiring.
✔ Check the Thermostat light on the
Control Module. If ON, the Control
Module is receiving data from the
Thermostat Keypad, the thermostat
may be able to control your furnace/AC
in this condition. Check the web site.
✔ Contact support for replacement
Thermostat Keypad and Control
module.
✔ The thermostat can not operate in this
condition.
✔ Contact support for a replacement
Keypad module.
✔ Try resetting or power cycling your
Internet router.
✔ Check your Internet connection.
✔ Check your Internet wiring.
✔ Make sure you can browse the Internet
using the thermostat network cable.
✔ The thermostat can continue to
operate.
✔ Contact support to obtain a
replacement Control Module.
✔ Login to the web site to unlock.
✔ In an emergency, and if no Internet
connection is available, cycle the
power to your thermostat to unlock.
✔ Review the Settings page and make
sure the timezone is set correctly.
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