Error Codes - Atag iC Economiser 27 Appliance Technical Manual

Error codes

A detected failure is indicated on the
display in blocking or error messages.
ERROR
ERROR DESCRIPTION
CODE
10 Outside sensor error (e.g. open, short circuit, out of range)
20 Flow sensor error (e.g. open, short circuit, out of range)
40 Return sensor error (e.g. open, short circuit, out of range)
50 T3 (DHW) sensor error (e.g. open, short circuit, out of range)
61 Bus communication error (contact open)
78 Water pressure outside of range or not connected (combi & system boiler)
105 Venting program active when power turned on or interrupted (runs approx. 7 mins.)
110 Safety temperature exceeded
111 Maximum temperature exceeded
117 Pressure too high (> 3 bar) or pump pressure increase too high (combi & system boiler)
118 Pressure too low (< 1 bar) or pump pressure increase too low (no pump detection) (combi & system
boiler)
119 Link on X2 position 4 and 5 missing (combi & system boiler)
129 Fan error (fan does not start up)
133 No flame after 5 ignition attempts
151 Fan error (speed control is not achieved or is out of range) or control unit defective
154 Flow increases too fast ∆T too large, return > flow
164 Flow switch not closed at heat demand (system pump not running) (regular boiler)
180 No error: shortly visible when leaving chimney sweep function
181 No error: shortly visible when leaving commissioning mode
Blocking code with spanner symbol
Error is temporary and will cancel itself or will
lock the boiler after several attempts (error).
Error code with bell symbol
Error means a lock on the boiler and can only
be remedied by a reset and/or intervention by
a service technician.
CHECKS
Check the sensor
Check the wiring harness for continuity
Check wiring harness not shorting to earth
Check no water leaks a ecting wiring harness
Check connection on PCB are connected properly
Check the sensor not short or open circuit
Check wiring harness connections between sensor & PCB
Check the sensor not short or open circuit
Check wiring harness connections between sensor & PCB
Check the sensor not short or open circuit
Check wiring harness connections between sensor & PCB
Check connection on blue connector on PCB
Check connection on ONE controller back plate
Check cable between ONE controller and PCB
Check water pressure on analogue gauge
Check the sensor
Check wiring harness not shorting to earth
Check the connection plug on top of sensor and PCB
If boiler does not see a pressure rise after 6 attempts (x 10min)
C118 with spanner will go to C78 with bell
Wait for venting programme to finish (runs approx. 7 mins.)
Temperature rise too fast. Check correct circulation of the
water and pump
Check the flow sensor not short or open circuit
Check correct circulation of the water and pump
Check water pressure on analogue gauge
Check water pressure on analogue gauge
Check 230V to pump
Check pump is spinning via de-blocking centre screw
Check PWM pump connection pins, cable and PCB connection X1
Check link and link connection to wiring harness
Check wiring harness
Check connection onto PCB X2 4 & 5
Check fan and cable
Check gas supply and flue system correct (in. condensate)
Check connection between gas valve and PCB
Check connection between spark generator and PCB
Check connections between spark generator and electrode
Check sensing lead connection between electrode and PCB
Check fan and cable
Check PCB
Check correct circulation of the water and pump
Check gradient setting
Check flow and return are the right way round
Check correct circulation of the water and pump