Save A Service Call - Raypak B0507 Owner's Manual And Installation Instructions

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Table Of Contents

Table of Contents

Check the items below before making a service call. You will be charged for attending to any condition or

fault that is not related to manufacture or failure of a part.

NOT ENOUGH HOT WATER (OR NO HOT WATER)



Is the electricity switched on?

Inspect the isolation switch adjacent to the water heater and ensure the

isolation switch is turned on.



Is there a time clock on the power supply?

Check the settings on the time clock to ensure they are suitable to enable

heating when required.



Is the ignition system 'locked out'?

Reset the water heater. Refer to



Is a code displayed on the electronic thermostat?

Check the LED display on the electronic thermostat (refer to the diagnostic

features for the relevant electronic thermostat installed as detailed on page 8).



Are you using more hot water than you think?

Are outlets (especially the showers) using more hot water than you think? Very often it is not realised the

amount of hot water used, particularly when showering. Carefully review the hot water usage. Have your

plumber fit a flow control valve to each shower outlet to reduce water usage.



Pressure relief valve running

Is the relief valve discharging too much water? (Refer to



Electronic thermostat temperature setting

Ensure the electronic thermostat temperature setting (set point) is appropriate. You may choose to have your

installer adjust the temperature setting upwards to gain additional hot water capacity.

Warning: Hotter water increases the risk of scald injury.



Water heater size

Do you have the correct size water heater for your requirements? The sizing guide in the Raypak sales

literature and on the Rheem website

WATER HEATER NOT OPERATING

If the system water temperature is abnormally low, the ignition system may have „locked out‟. A lockout condition is

indicated by the reset button being illuminated. If this occurs, the ignition system can be reset as follows:



Wait five (5) minutes for unburnt gas to escape which may be present from a previous failed ignition attempt.



Press and hold the reset button for approximately 1 second (the reset button light should extinguish).

If the water heater still fails to operate, call your nearest Rheem Service Department or Accredited Service Agent to

arrange for an inspection.

DIAGNOSTIC FEATURES OF IC902 ELECTRONIC THERMOSTAT

On/Off models incorporate an IC902 electronic thermostat. In the event of a temperature sensor fault occurring, a

code will be shown on the thermostat display to diagnose the fault.

DIAGNOSTIC FEATURES OF RWF55 ELECTRONIC THERMOSTAT

Modulating models incorporate an RWF55 electronic thermostat. In the event of a temperature sensor fault

occurring, a code will be shown on the thermostat display to diagnose the fault.

Upper window (red)

9999 (flashing)

-1999 (flashing)

9999 (flashing)

-1999 (flashing)