Froling FHG User Manual

Troubleshooting
Page 48
B0600008_US v
6
6.3.1 Acknowledging a error message
Trace and remove the error cause and then:
 Press Enter Key (6.3)
 Status LED flashes green
6.3.2 List of possible error message
Error number /
Error message
Error information text /
Cause of Error
Troubleshooting
0
Hi-limit or e-stop
activated!!
Overheat Thermo-
stat (STL) or
EMERGENCY OFF
activated
 The boiler has overheated through
strong reduction in heat consump-
tion
 Customer switches for heating or
circulators (pumps) outside Boiler
Control System were switched off
 Circulator (pump) suddenly stops
 Slide valves, cut-off valves, flow-
check valves or zone-valves closed
 Overheat Thermostat automatically
has been activated:
Reset Overheat Thermostat (STL)
after the boiler has cooled down
Refer to 6.2 Excessive temperature
 Check switches for heating or circu-
lators (pumps) outside Boiler Con-
trol System
 Check circulator (pump)
 Reopen slide valves or cut-offs,
check flow-check valves or zone-
valves
1
Boiler temperature
sensor faulty
 Sensor signal incorrect
 Check sensor; ask a licensed elec-
trician to check sensor cable and
connections
2
Primary air damper
blocked
 Deviation of more than 5% be-
tween position and control signal
for more than 5 minutes
 Actuator not turning
 Actuator incorrectly fitted
 Incorrect direction of rotation
 Movement of damper impeded
 Connection cable defective
 Check actuator and mechanics
 Ask a licensed electrician to check
actuator cable and connections
 Correct assembly: the damper
must be closed at primary air signal
0%
 Ask a licensed electrician to swap
connections for "open" and "close"
at plug within Boiler Control Sys-
tem
 Check to see if damper is jammed
 Ask a licensed electrician to check
actuator cable and connections
6.3

Froling FHG Specifications

General

Brand	Froling
Model	FHG
Category	Boiler
Language	English