Installation & Servicing instructions
AT
AG XL
49
Error
Errors
A-B
Error burner A
The last 10 errors with data will be stored.
Choose burner A or B using arrow buttons. Exchanger symbol will show: A or B
Error 01
Select other error number (02-10) with arrow buttons
Every error contains the following info (Press + button for forward, - button for backward)
Code Exxscxx
Date
Time
Operational status
T1 flow temperature
T2 return temperature
T1a secondary flow temperature
P1 water pressure
P2 cylinder pump
P3 system pump
P4 cylinder load pump
Damper on/off (no function)
Fan on/off
Gas valve open/closed
Ignition on/off
Info
Information
Cascade
Information of cascade system
T3
xx.x°C
DHW temperature T3 in external cylinder in °C (if connected and P100 is selected for DHW)
T4
xx.x°C
Outdoor temperature T4 in °C (if connected)
T10
xx.x°C
Temperature T10 sensor in low velocity header in °C
OT sp
x.x°C
OpenTherm setpoint room temperature in °C (visible when OT is selected)
Req Load
xx%
Requested load of the cascade system in %
Req Temp
xx.x°C
Actual requested flow temperature according gradient line of the cascade system in °C
Req Temp
xx.x°C
End value of the requested flow temperature of the cascade system in °C
Error
off
Status relay external error signal
on-off
0-10V
xx.xV
Tension on 0-10V contact (visible whenP101=1 or 2)
P3
off
Status system pump P3
on-off
P2
off
Status DHW pump P2 (visible when P100=5-8)
on-off
+
‐
P2
off
Status DHW pump P2 (visible when P100 5 8)
on off
P4
off
Status cylinder loading pump P4
on-off
Heatdmnd.
off
Heat demand yes/no
on-off
LPG / Extra B
off
Status relay external heating source
on-off
Boiler
Information of the boiler
T1-ave
xx.x°C
Actual average flow temperature of the boiler in °C
T2-ave
xx.x°C
Actual average return temperature of the boiler in °C
T3
xx.x°C
Req Load
xx%
Requested load of the boiler in %
Req Temp
xx.x°C
Requester flow temperature of the boiler in °C
3WV
closed
Status 3-way valve
open-closed
P2
off
Status DHW pump P2 (visible when P100=1-4)
on-off
P4
off
Status cylinder loading pump P4
on-off
BurnerA
Information of burner/heat exchanger A
Select burner A or burner B using + and - button. Symbol heat exchanger will show: A or B
A-B
T1
xx.x°C
Actual flow temperature
T1a
xx.x°C
Actual flow temperature secondary sensor
T2
xx.x°C
Actual return temperature
Req Load
xx%
Requested load in %
Flame
x.xx uA
Actual ionisation in µA
Water Pr
x.xx bar
Actual water pressure
FanSpeed
xx
Actual fan speed in revolutions per minute
Fan PWM
x.x%
Actual fan capacity in %
Fan
off
Status fan
on-off
Gas
off
Status gas valve
on-off
Ign.
off
Status ignition
on-off
P1 PWM
x.x%
Actual pump speed in % (only with modulating circulation pump)
P1
off
Status pump
on-off
Others
Select burner A or burner B using + and - button. Symbol heat exchanger will show: A or B
A-B
Stand-by
xx h
Number of hours stand by
Burn ON
xx h
Number of running hours with burner on
Service
xx h
Number of running hours to go for maintenance interval
Ignition
xx
Number of times ignition
DHW temperature T3 in external cylinder in °C (if connected and P100 is selected for DHW)
Faults
xx
Number of times in error
Safety 02017005
Regul. 01017016
MMI 03017017
OEM par. 00017xxx xxx: 020 = XL70, 080 = XL110, 140 = XL140