13
TM063 701, 702 & 703 Series Boiling Water Unit Service Instructions
Revision D: Feb 2017
This document is stored and maintained electronically by Service. All printed copies not bearing this statement in RED are deemed “uncontrolled”
The control board or electronic controller is used to control the BWU by monitoring the
water temperatures in the boiling water tank (via the boiling water thermistor) and
processing commands received from the timer.
The control board has a relay which when energised will switch power to the boiling water
triac (boiling water element circuit). In the event of a critical fault the control board relay will
de-energise and open circuit the boiling water element circuit preventing it from operating.
3 – 15L Model Electronic Controller
25 & 40L Model Electronic Controller
There are two types of timers available depending upon BWU series. Refer to ‘Timer – 701
& 702 series below or Eco Timer – 703 Series page 20.
701 & 702 series BWUs are supplied with a programmable
24 hour 7 day timer which can be programmed to turn the
BWU ‘ON’ or ‘OFF’ at predetermined days and times.
The timer incorporates a ‘Sleep Delay Time’ function which
when programmed will automatically shut the system down
after a set period of time of no use i.e. after 6 hours.
The timer has a ‘Filter Life’ function which when
programmed and selected will display the remaining life of
the water filter in litres. Note: A water filter is optional and is
not supplied as standard.
The timer has a ‘Service Menu’ which can display error
codes, temperature settings etc.
To Next Page
Loading...
