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WIRELESS OUTDOOR RESET MODULE ALARMS AND
TROUBLESHOOTING
The W8735ER Wireless Outdoor Reset Module's enhanced diagnostics provides information alerting of deteriorating boiler
efficiency or if the system is not running optimally. Outdoor reset-related errors can be displayed on diagnostic tools and displays.
Errors are also displayed on the Aquastat's 3-digit display. See Table 5 for available Outdoor reset-related error codes.
Error
Code
a
Warning: Outdoor Reset System failure; communication to Outdoor Reset Module lost, Outdoor
Err 9
Reset Module failure, multiple outdoor temperature sensors detected on the bus, or outdoor
temperature sensor failure. Check EnviraCOM wiring (1, 2, 3), check sensor wiring.
Warning: Boost Failure; Boost Mode active at least once per cycle for the last 60 consecutive
a
Err 10
cycles. Check Outdoor Reset curve settings.
a
DHW Module Sensor failure.
Err 11
Warning: DHW System failure; communication to DHW Module lost, DHW Module failure, or
temperature sensor failure. Check EnviraCOM wiring (1, 2, 3), check sensor wiring.
a
Warnings are generated to enunciate the system is not operating optimally, but the Aquastat is still operating and maintaining
boiler temperature. In the instance where an Outdoor Reset Module is used, the warnings may indicate a reset curve setting
error one or more features is not running optimally, and the Aquastat is reverting to default settings or has stopped running the
Outdoor Reset algorithms. The warnings are cleared when the issue(s) is resolved.
NOTE: Aquastat alarms reset automatically once the alarm condition has been resolved. Alarms can also be reset by
cycling power if the alarm condition is no longer present.
Alarm Desription
Duplicate Outdoor Temp Alarm Present
Outdoor Temp Sensor Low Battery Alert
Outdoor Sensor Missing/Failure
Missing Outdoor Temp Sensor
Table 5. Aquastat Outdoor Reset Related Error Codes.
Cause/Action
Table 6. EnviraCOM Outdoor Reset Alarms and Troubleshooting.
EnviraCOM
Alarm
50
156
53
149
W8735ER WIRELESS OUTDOOR RESET MODULE
Troubleshooting
Only one outdoor sensor (wired/wireless) is allowed.
Ensure no other outdoor sensors is connected.
Replace sensor batteries
Outdoor sensor failure. Replace sensor.
Module not bound within 5 minutes of power-up or lost once
enrolled. Check batteries
7
EnviraCOM
Alarm
50, 53, 149
150
146, 147, 148
66-1202—01
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