Wolf TGB-40 - Page 2

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ON/OFFswitch
Display
Programming
keys
DHW
temperature
selector
Systempressure
Resetbutton
Programselector
Heatingwater
temperature
selector
ON/OFFswitchON/OFF
CD
ResetAfault isreset bypressingthe reset button whichwill alsorestartthe
system.Thesystemisrestarted ifthe reset keyisactivated when there was
no fault present
inthe system.
Heatingwatertemperaturedisplayorfault codemessage(flashing)
Thecurrent heating
watertemperatureis displayedbya two digitLCD
display.Adot illuminates next to the heating water temperature when a
flamehasbeenestablished.Aflashingfault codeappears inthe LCDdisplay
insteadofthe heatingwater temperature, whenafault hasbeendiagnosed.
Thefollowingtable explainstheir causes:
<II @
Fault code specification
Fault
Gasvalve,fault 2
Gasvalve,fault 1
Lackof air
Differential pressure switch fault
Gasfan,fault
Gasfan,
fault
CRCfault, boiler
CRCfault, burner
Fault in 24 VACsupply
Low-water indicator
Internal fault - control PCB
(flashing quickly)
Faultcode Fault
Faultcode
1
STB- High-limitsafetycut-out
20
4
Noflame established
21
5
Flamefailure during operation
22
6
STW- Excesstemperature
23
7
STBA- Excesstemperature
25
11
Flamepretence
26
12
Flowsensor faulty
30
13
Fluegas sensor faulty
31
14
DHWsensor faulty
32
(onlyfor SWconnection)
40
15
Outside temperature sensor
XX
fauIty
16
Returnsensor faulty
6