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11.8.2 Test Mode
Test mode allows a forced CH demand, this allows for flue gas analysis tests to be performed
following a service operation, even if a switched live demand is not present.
Note. The appliance must have CH mode enabled, as indicated by the CH icon shown on
the LCD.
Test mode can be activated by pressing the DHW+ button (1) and CH+ button (7) for 10
seconds.
When activated, CH demand is forced, and the maximum CH setpoint is set.
During operation of Test mode, the LCD displays “tESt” with the Engineer icon flashing.
The function can be disabled by pressing the Mode button (3) for 5 seconds.
Alternatively the function is automatically stopped after a timeout period of 15 minutes. A
countdown timer is shown on the auxiliary digits.