AUTOTERM PU-5 - Page 7

7
Malfunctions .
Malfunctions occurring during heater operation are coded and automatically displayed
on the control panel by blinking of the red LED in pos. 4 (with pause). For malfunction
reset, press any key.
ATTENTION!
Maintenance and repair should only be performed by trained, qualified
personnel!
The user can correct the following malfunctions (Table 1).
For all other malfunctions (Table 2) or if the user cannot correct the malfunction, contact a
service center.
Table 1
Number
of blinks
Malfunction
description
Comments
Troubleshooting
1
Heat exchanger
overheating
Check the heater inlet and outlet pipes for free inflow and
outflow of heated air.
2
All attempts to
start failed
Check the fuel supply (check the fuel line). Check the
combustion air supply system and the gas exhaust pipe.
3
Too many
flameouts during
operation
Check the fuel supply (check the fuel line).
Check the combustion air supply system and the gas
exhaust pipe.
8
No
communication
between control
panel and control
unit
Check connecting wires and connectors.
Control panel doesn’t receive data from the control unit.
Check connecting wires and connectors.
Control unit doesn’t receive data from the control panel.