Infinity REU-VR3237WG /HD250e REU-VRM3237WC - 5 - Issue 1 - 19/05/09 ©Rinnai
4. Water Controllers
All water controllers must be installed in accordance with the relevant operation/installation instructions
supplied with the water heater or controllers.
Trouble shooting
Water Controller not showing display - (Wired Water Controllers)
• Check that the correct number and combination of controllers have been installed for the specific
model Infinity. Refer to controller compatibility table below.
• Check water controller is turned ON.
• Check there is 12VDC power supply available to the controller from the Ezi-connect terminals.
• If there is 12VDC available from the Ezi Connect but no controller display, check wiring between
Ezi-connect and controller is sound.
• If there is no power from the Ezi-connect terminals, but the hot water functions correctly, replace
PCB.
Error Code 12 as soon as hot water tap is turned ON.
• Check 12VDC internal wiring to Ezi-connect terminal is not crushed or shortened.
• Rectify wiring and re-close Ezi-connect cover carefully.
Water Controller not showing display - (Wireless Water Controllers)
• Ensure transceiver module is mounted in the correct location, as per wireless controller installation
instructions.
• Ensure 2 x AA batteries are in good working order and installed with the correct polarity within the
wireless controller. (Battery polarity details on rear of wireless controller)
• Ensure distance between wireless controller and transceiver does not exceed 50 metres.
• Ensure channel has been allocated to each wireless water controller.
• Ensure wireless controller has been programmed to the transceiver correctly, as per wireless water
controller installation instructions.
Water Controller Compatibility Table
Wireless Only
Installation
A maximum of 4 wireless water controllers can be fitted with the following limitation:
Only ONE
MC-502RC can be set as the Master Controller.
Wired &
Wireless
Installations
A maximum of 4 water controllers can be fitted. Any combination of deluxe, universal and
wireless controllers can be used with the following limitation:
Only ONE
master controller can be installed. This can be a MC-100V, a MC-91Q (when
programmed as a master controller) or a MC-502RC water controller.
Up to TWO
BC-100V water controllers can be installed.
The FOURTH
water controllers in any installation MUST BE a MC-502RC or a
MC91Q.
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