Water Controllers - Rinnai REU-V1620WG Service Manual

4. Water Controllers

All water controllers must be installed in accordance with the relevant operation/installation instructions supplied with
the water heater or controllers.
Care should be taken to ensure power supply to the Infinity is isolated when connecting /
disconnecting controller wiring or transponder on wireless controllers. Failure to isolate
NOTE
power supply may result in damage to the appliance PCB.
Care should be taken when closing the Ezi-connect access panel, to ensure internal wiring
for controllers is not shortened or crushed.
Troubleshooting
Controller not showing display - (Wired 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 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 shorted.
• Rectify wiring and re-close Ezi-connect cover carefully.
Controller not showing display - (Wireless 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 controller.
• Ensure wireless controller has been programmed to the transceiver correctly, as per wireless controller
installation instructions.
Controller Compatibility Table
A maximum of 4 wireless water controllers can be fitted with the following limitation:
Wireless Only
Only ONE MC-502RC can be set as the Master Controller.
Installation
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
Wired &
programmed as a master controller) or a MC-502RC / MC-503RC water controller.
Wireless
Installations
Up to TWO BC-100V water controllers can be installed.
The FOURTH water controllers in any installation MUST BE a MC-502RC / MC-503RC
or a MC91Q.
REU-V1620WG / REU-V1620WB / REU-V1620WS / REU-V2024WG - 6 - Issue 1 - 6/04/09 ©Rinnai