© 2019 AKW
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Troubleshooting for Engineers
Commissioning
Overheating
The shower is fitted with an over-temperature indicator and a safety cut-out device. In the event of
abnormal operation which could cause unsafe temperatures within the unit, the device will disconnect
the heating elements and switch to standby mode.
If the water temperature rises above the desired maximum temperature setting momentarily then
***No. 10 temperature LED will flash at a 2Hz rate. The shower will control the water temperature
back to the desired level.
If the water temperature rise is uncontrolled the shower will switch to standby mode prevent an
unsafe temperature and the **Temperature LEDs 1 to 10 will flash immediately. The shower will not
turn back on until the water inside the unit has cooled to a safe level. Perform a COLD FLUSH to cool
the heating elements quicker. If the fault persists then a reset or internal repair may be required.
Ensure all electrical connections are tight to prevent overheating.
Low Flow/Pressure Failure
The shower contains a ‘LOW FLOW/LOW PRESSURE’ indicator which will operate, if the following
conditions occur:
• Low water pressure optimum performance is recommended at a constant minimum 1 bar
• Blocked or partially blocked spray plate
• Blocked inlet filter
• Supply flow rate is below 2 litres per minute
If any of the above low pressure conditions occur, the unit will STOP as this will cause the shower to
be over temperature and the over temp LEDs will flash. Turn off the electrical supply by operating
the pull-cord switch or isolating switch, then turn the power back on and instead of waiting for the
shower heater element/tank to cool down, perform a COLD FLUSH.
If the problem still persists then refer to Fault Finding. Ensure all plumbing connections are
watertight. Check the hose and shower handset. If the filter is suspected to be blocked, clean it.
If the problem still persists, contact AKW Technical Enquiries.
