Specifications

Installation & Maintenance Manual__________
52
14.2 ALARM CODES
controller code for cause solution to the problem result reset alarm
H remote Carel
Humivisor
attempt these fixes once; if the problem
persists contact Carel service personnel
relay
E503
the PTC sensor in the vent
has measured an over-
temperature condition
shut off the humidifier, check the
water level, clean the steam
generator and burner
shut down Power
ON/OFF
active
E504
low level of water in the steam
generator or level control fault
check the water feed connections;
clean the fill valve, the level control,
and the steam generator
shut down Power
ON/OFF
active
E505
high conductivity of the feed
water
Shut off the unit and clean the
conductivity probes; if the problem
persists, change the source of the
water or install a water treatment
system (partial demineralization) - the
problem will not be resolved by the
addition of water softeners.
shut down Power
ON/OFF
active
E511
autotest failed; probably a
problem with: filling, draining,
or level control of the water
check that the unit is able to fill with
water;
check that the unit is able to drain
water;
shut off the unit and clean the fill
valve, the drain valve, and remove
and replace the water filter.
disable
humidifier
Power
ON/OFF
active
E513
power not available; unit is
not attaining required steam
production or water preheat
check gas pressure; check fan
operation
disable
humidifier
Power
ON/OFF
active
E514
lack of feed water
Check the feed water lines to the
humidifier externally and internally to
make sure they are not blocked or
kinked;
verify that the fill solenoid is working;
make sure there is not excessive
pressure in the steam distribution
preventing the gravity fill into the
steam generator;
verifiy that there are not bends or
other places condensate can build up
in the steam distribution piping
disable
humidifier
Power
ON/OFF
active
E515
Formation of foam in the
steam generator during steam
production.
The formation of foam is usually
cause by chemicals in the water
(solvents, lubricants, detergents,
water-treatments, water softeners) or
heavy concentrations of dissolved
salts. Bleed the water feed lines and
clean the steam generator.
warning automatic not active
E517
Blower error;
exhaust or inlet pipe
obstructed; manual gas valve
closed; flame sensor
electrode touching the burner
grid; blower doesn’t follow the
speed reference.
switch off the machine:
Check for obstructions in vent
exhaust piping; check that gas valve
is open; remove the blower and check
operation.
disable
humidifier
Power
ON/OFF
active
E531
pre-alarm for high conductivity
feed water
check the conductibility of the feed
water;
if necessary install water treatment;
the problem will not be resolved by
the addition of water softeners.
warning automatic not active