38
code HG0141.00GB ed.A-2008
LRP - RAPID PRO and LK - KONDENSA
LRP and LK WARM AIR HEATER
FAULT
DESCRIPTION
CAUSE
UNLOCK
F38
Alarm from ID6 input
•
Contact ID6 open/closed when b17 ≠ 0;
•
Contact open when b17 = 1; contact close when
b17 = 2.
Manual reset
NTC probes broken or missing
F41
Probe NTC1 error, air intake temper-
ature
•
No signal from probe or broken probe
Auto-reset
F43
Probe NTC3 error, flue gas temperature
Auto-reset
Over-temperature
F51
The temperature of the air intake probe
NTC1>TH1
•
The minimum heat output of the heater is over-
sized compared to the heat output required by
the environment.
•
Check the TH1 parameter - air intake set point.
•
Cooling fan(s) inoperative.
•
Fan grille clogged or dirty.
•
Air vent closed or partially closed.
Auto-reset
if NTC1< TH1-15
Check ModBus communication
F60
Communication error between CPU-
SMART PCB and ModBus, Smart Web
or SMART Easy network
•
ModBus network is disconnected.
•
The address of the PCB is wrong and/or not con-
figured in the ModBus network.
Autoresolve
No voltage
F75
No voltage during operation cycle (ex-
cluding stand-by);
the fault is not visible on remote control
but only counted.
•
No voltage during operation
Autoresolve
F80
Pressure gauge error
•
Pressure gauge at fault or not connected
•
Input signal at B2 is < 0.2 Vdc
Auto-reset
F81
Pressure less than B2 setpoint
•
Input signal at B2 is < ST5 setpoint
Auto resolve
F82
Higher pressure at B2 setpoint
•
Input signal at B2 is < ST5 se TH5
Auto resolve
F99
CPU-PLUS PCB parameter program-
ming error
•
S1=0 with SEL=1 and D0=2
•
S3=0 with SEL=3 and D0=2
•
D2≠0 and D9=1
•
D10=1 with D8=1
Auto resolve
Internal malfunction of CPU-SMART PCB
F00
Internal malfunction of CPU-PLUS PCB
•
Perform a manual reset of the PCB; replace the
CPU-SMART PCB if the problem persists.
•
One or more parameters of the CPU PCB have a
value outside of the expected range
Manual reset
CPU
CPU-PLUS PCB communication error •
RJ11 cable disconnected or faulty
•
CPU-SMART PCB faulty
Auto resolve
...
LCD panel PCB communication error •
RJ11 cable disconnected or faulty
•
LCD panel PCB faulty
Auto resolve