Faults
Gaz 6000 W – 6720866247 (2019/07)
40
17.2 Faults that are shown on the display
Table 27
Display Description Remedy
A7 Hot water temperature sensor is faulty. ▶ Check the temperature sensor and connecting lead for breaks or short-
circuits and replace them if required ( page 37).
Ad Cylinder temperature sensor not detected. ▶ Check the cylinder temperature sensor and connecting lead, replace if
required.
C1 Fan speed too low. ▶ Check mains voltage.
▶ Check the flue system and clean or repair if required.
C4 The differential pressure switch does not open when
fan switched off.
▶ Check the differential pressure switch and cabling, also check the
connection hoses.
C6 Differential pressure switch does not close. ▶ Check the fan cable with plug and fan, replace if required.
▶ Check the differential pressure switch and flue gas routing.
C7 Fan not running. ▶ Check the fan cable with plug and fan, replace if required.
CE Heating system charge pressure is too low. ▶ Top up the system with water.
d7 Gas valve is faulty. ▶ Check the connecting lead.
▶ Check the gas valve and replace it if required.
E2 Flow temperature sensor is faulty (breaks). ▶ Check the temperature sensor and connecting lead for breaks or short
circuits, replace if required.
E9 Temperature limiter for heat exchanger has
responded.
▶ Check the temperature limiter and connecting lead of the heat exchanger
for breaks, replace if required.
▶ Check the operating pressure of the heating system.
▶ Check the temperature limiter and replace if required.
▶ Check the starting of the pump, replace pump if required.
▶ Check the fuse and replace if required ( page 20).
▶ Vent the device.
▶ Check the heat exchanger on the water side and replace if required.
EA Flame not detected. ▶ Check that the earth lead is correctly connected.
▶ Check whether the gas isolator is open.
▶ Check the gas supply pressure and correct it if required.
▶ Check the power supply.
▶ Check the electrodes and cable, replace if required.
▶ Check the flue system and clean or repair if required.
▶ Check the gas setting and correct it if required.
▶ For natural gas: Check the external gas flow monitor and replace it if
required.
▶ In the case of open flue operation, check the interconnected room air
supply or ventilation openings.
▶ Clean the heat exchanger ( page 36).
▶ Check the gas valve and replace it if required.
Flame detected even when the burner is switched
off.
▶ Check electrodes for contamination and replace if required.
▶ Check the flue system and clean or repair if required.
▶ Check the PCB for moisture and dry it if required.
FA After switching gas off: flame is detected. ▶ Check the gas valve and replace it if required.
▶ Check the electrodes and connecting lead, replace if required.
▶ Check the flue system and clean or repair if required.
Fd Key was held down for too long by mistake (over
30 secs.).
▶ Press the key for 3 seconds.
P Appliance type not defined. ▶ Set the appliance type ( service function 3.1A).
Fan stage not set. ▶ Set the fan stage.
To Next Page
Loading...
