8 Troubleshooting – Possible faults
162
HDG M299/300/350/400 - Version 1 - en
©
HDG Bavaria GmbH 07/2008
ST091
Secondary air
fan defective
•
Thermal contact in fan is
faulty
•
Relay in control cabinet
faulty
•
Plug contacts on the fan are
faulty
•
Check thermal contact
•
Check the relay
•
Check plug contact
ST092
Stepping grate
blocked
•
Grate runtime monitoring
faulty
•
Stepping grate blocked
•
Motor is faulty
•
Drive chain torn
•
Check limit switch (orange
LED lights up with contact)
•
Check stepping grate
•
Check the motor
•
Check drive chain
ST093
Ash auger grate
blocked
•
Ash auger runtime
monitoring faulty
•
Ash auger blocked
•
Motor is faulty
•
Drive chain torn
•
Check limit switch (orange
LED lights up with contact)
•
Check ash auger
•
Check the motor
•
Check drive chain
ST094
Klixon grate
drive
•
Thermal contact in motor is
faulty
•
Overheating of motor
•
Check thermal contact
•
Let motor cool down
ST095
Return pump
faulty
•
Relay in control cabinet
faulty
•
Return pump faulty
•
Control unit (0-10V) faulty
•
Check the relay
•
Check return pump
•
Check control unit
ST098
Container 1 + 2
empty
•
Faulty limit switch
•
Removable container empty
•
Check limit switch
•
Fill removable container
WA193
Boiler
temperature
sensor faulty
•
Supply sensor faulty
•
Line faulty
•
Analogue module faulty
•
Check supply temperature
sensor
•
Check the electrical
connection
•
Replace analogue module
WA194
Return
temperature
sensor is faulty
•
Return line sensor faulty
•
Line faulty
•
Analogue module faulty
•
Check return line sensor
•
Check the electrical
connection
•
Replace analogue module
WA195
Accumulator top
temperature
sensor faulty
•
Accumulator sensor faulty
•
Line faulty
•
Analogue module faulty
•
Check accumulator sensor
•
Check the electrical
connection
•
Replace analogue module
WA196
Accumulator top
temperature
sensor faulty
•
Accumulator sensor faulty
•
Line faulty
•
Analogue module faulty
•
Check accumulator sensor
•
Check the electrical
connection
•
Replace analogue module
No.
Fault
Cause
Remedy
Table 8/1 - Faults (continuation)
Summary of Contents for M299
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