37
code HG0141.00GB ed.A-2008
LRP - RAPID PRO and LK - KONDENSA
LRP and LK WARM AIR HEATER
FAULT
DESCRIPTION
CAUSE
UNLOCK
Lockout caused by Flame - Caused by the flame monitoring equipment (TER)
F10
Failure to ignite flame after 4 attempts
performed by the equipment.
•
No gas
•
Gas supply pressure too high (>60mbar)
•
Live and neutral reversed
•
Earth wire not connected
•
Phase-phase connection without neutral
•
Start-up electrode failed or badly positioned
•
Detection electrode failed or badly positioned
•
Detection electrode that moves or disperses to the
earthing system when hot
•
Condensation detection electrode defective or
earthed
Manual reset
F11
Untimely flame (detection of
flame when, for to the
flame control equipment, it should
not be present)
F12
Ignition failure; not visible.
The count, displayed in the history,
indicates whether the heater has had
problems with ignition.
F13
The TER equipment does not accept
the reset command from CPU-PLUS
•
TER has finished its 5 reset attempts in the period
of 15 minutes.
Wait 15 min or
press the reset
button on the
equipment
F14
Lack of communication between TER
equipment and CPU for more than 60
seconds
•
TER equipment or CPU-PLUS PCB broken
•
Connections on the STB thermostat to earth
•
Capillary of the STB thermostat that discharges on
the earth faston of the thermostat body
Auto-reset
F15
The CPU-SMART PCB sent the ignition
signal to the TER equipment which, after
300 seconds and with no lockout, has
not communicated its correct operation
status.
•
Poor gas mains pressure
•
Low CO
2
value
•
Faulty TER equipment
Manual reset, au-
to-reset after 5 min-
utes
F16
Generic equipment lockout
•
It indicates that if the heat request has remained
active for more than 24 consecutive hours, the
TER equipment has performed a control cycle
switching temporarily to stand-by mode
Manual reset, au-
to-reset after 5 min-
utes
F17
Internal malfunction of TER equipment
that does not accept reset command
from CPU-PLUS
•
Faulty TER equipment
Manual reset, au-
to-reset after 5 min-
utes
Lockouts caused by temperature (safety lockouts)
F20
Activation of safety thermostat STB
•
Excess air temperature due to lack of air circulation
•
Safety thermostat broken or not connected
Manual reset
F21
(NOT USED - Jumped)
Input ID1 open
•
ID1 - IDC1 jumper missing
Manual reset
F22
Opening of safety thermostat STB at
ignition
•
Frost or temperature below -20°C
•
Safety thermostat broken or not connected
Auto-reset
FAN lockout - burner fan
F30
Fan speed too low in start up phase
- VAG
•
Burner fan broken.
•
FAN electric cables interrupted, not connected or
wrongly connected
Manual reset
F31
Fan speed too high in start up phase
- VAG
F32
Fan speed, during operation, outside
minimum and maximum set parame-
ters - VAG
Manual reset, au-
to-reset after 5 min-
utes
F35
Alarm from ID5 input
•
Contact ID5 open/closed when b16 ≠ 0;
•
Contact open when b16 = 1; contact close when
b16 = 2.
Manual reset
5.7. Analysis of lockouts- faults
The CPU-SMART manages two types of lockouts:
•
preventive, it warns the customer that the LRP and LK heaters require maintenance;
•
operational, it stops the LRP or LK heater for safety reasons or to ensure its correct operation.
Some operational faults require manual reset; others reset themselves when the problem that caused them is solved.
Below is a complete list of faults, possible causes and possible solutions.
