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9
SAVE A SERVICE CALL
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 power outlet adjacent to the water heater and ensure the water
heater is plugged in and the outlet is turned on.
• Is there a time clock on the power supply?
Check the settings on the time clock and ensure they are suitable to enable
heating when it is required.
• Is the ignition system ‘locked out’?
Reset the water heater. Refer to “Water Heater Not Operating”
on page 9.
• Is a code displayed on the electronic thermostat?
Check the LED display on the electronic thermostat. If a code is displayed, refer
to “Diagnostic Features of Electronic Thermostat”
on page 9.
• 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 “Pressure Relief Valve Running”
on page 10).
• Thermostat setting
Ensure the thermostat setting is appropriate. You may choose to have your installer adjust the thermostat
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 (www.rheem.com.au)
suggests average sizes that may be needed.
WATER HEATER NOT OPERATING
The ignition system may have ‘locked out’. To reset the water heater, switch the electrical supply off at the isolating
switch, wait five (5) minutes then switch on again. If the water heater fails to light, phone your nearest Rheem
Service Department or Accredited Service Agent to arrange for an inspection.
DIAGNOSTIC FEATURES OF ELECTRONIC THERMOSTAT
147 On/Off and Hi/Lo water heaters incorporate an electronic thermostat. In the event of a fault occurring, a code
will be displayed on the thermostat LED to diagnose the fault.
147 On/Off Models (AKO Thermostat) 147 Hi/Lo Models (CTX Thermostat)
Code Fault Code Fault
EE
Memory error
AL1
Memory error
E1
Temperature sensor failure
AL2
Temperature below the alarm set point
AL
Temperature below the minimum set point.
Refer to “147 On/Off Operation”
on page 8.
AL3 (130)
Water temperature sensor open circuit
Refer to “147 Hi/Lo Operation”
on page 8
AH
Temperature above the maximum set point.
Refer to “147 On/Off Operation”
on page 8.
AL3 (-45)
Water temperature sensor short circuit
Refer to “147 Hi/Lo Operation”
on page 8
In the event of an “AL” fault on 147 On/Off water heaters, or an “AL2” fault on 147 Hi/Lo water heaters an attempt
should be made to reset the electronic control if the burner is not already alight (refer to “Water Heater Not
Operating” on page 9).
All other fault conditions should be attended to by your nearest Rheem Service Department or Accredited Service
Agent.