Error A2 - Rheem IKONIC RTGH-S11i Manual

IKONIC Tankless Water Heater Service Manual
ERROR CODE DIAGNOSTICS
ERROR 2##
A2## ERROR CODE WATER HEATER COMM. FAILURE INSTANCE ## (## IS
NO.02 TO NO,20)
EXPLANATION
This water heater can manifold up to 20 units. In this
case, these water heaters have to have a set instance for
each unit. To set the instance for each unit, refer to sec-
tion "Network instance"
If one of the water heaters in the manifold unit displays
an error code, the manager water heater displays the
"A2##" error code on the Liquid Crystal Display (LCD) on
the User Interface.
For example, if 20 water heaters are in a manifold and the
unit of instance, No.5, displays the same error code, the
manager water heater (instance No.1) displays "A205"
error code.
62
DIAGNOSTIC CHECK ITEMS
• Water heater error code is displayed.
CHECK METHOD
Confirm the water heater error code displayed, and make
a diagnosis corresponding to the error code.