Troubleshooting 50020149575_01 ecoCRAFT exclusive Operating instructions 15NoteThe effect of the frost protec-tion function is that, at cylindertemperatures below 10 °C, thedomestic hot water generationis switched on until the water inthe cylinder has reached 15 °Cagain.4.2.3 Switching off heating mode(with control)1. Leave the rotary knob for setting theheating flow temperature at the clock-wise end stop.2. Switch heating mode to "OFF" on thecontrol.4.2.4 Switching off heating mode(without control)▶ Turn the rotary knob for setting theheating flow temperature to the anti-clockwise end stop.◁ Heating mode is switched off.◁ The product's internal frost protectionfunction is activated.4.3 Carrying out the flue gasanalysisNoteMeasurement and inspection workmust only be carried out by thechimney sweep or competent per-son.2 11. Switch on the chimney sweep functionby pressing the − (2) and + (1) buttonsfor the DIA system at the same time.◁ Shown in the display: S.Fh = Heat-ing chimney sweep operation; S.Fb= Domestic hot water chimneysweep operation◁ The product now works at maximumload for 15 minutes. If you do notpress any buttons for 15 minutesor if a flow temperature of 85 °C isreached, the chimney sweep func-tion is automatically switched off.2. Take the measurements at the earliestafter three minutes of the product oper-ating.3. Unscrew the sealing caps from themeasuring stub pipe.4. Take the measurement at the measur-ing stub pipe in the flue gas route.5. Take the measurement at the measur-ing stub pipe in the air route.6. Switch off the chimney sweep functionby pressing the − and + buttons for theDIA system at the same time.7. Screw the sealing caps onto the meas-uring stub pipe.5 Troubleshooting5.1 Detecting and rectifying faults▶ If problems occur whilst operating yourproduct, you can carry out certain self-checks with the aid of the table in theappendix.Troubleshooting (→ Page 20)▶ If the product still does not functionwithout problems after the checks havebeen carried out using the table, con-tact your competent person to rectifythe problem.