QUATRO
HU315
28
QUATRO
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”We Make Clean Air”
30 Hymus Boulevard, Montreal, Quebec, H9R 1C9 Tel.: (514) 630-4444 Fax: (514) 630-4454 website: www.quatro-air.com
Trouble-Shooting
problem
causes
solutions
the humidifier does not turn on
1. no electrical power
2. on/off switch of the humidifier in
position 0 (open)
3. control connectors improperly
connected
4. blown fuses
5. transformer failure
1. check the safety devices upstream from
the humidifier and the presence of power
2. close the switch on the panel: position I
3. check that the connectors are properly
inserted in the terminal block
4. check the condition of fuses F1/F2/F3
5. check that the voltage across the
secondary winding of the transformer is
24Vac
the humidifier does not start
operation
1. remote ON/OFF contact open
(relay/terminals AB - AB or 7I - 8I)
2. the humidistat has not been
connected correctly
3. humidistat failure
4. control signal not compatible
with the type set
5. value measured by the sensor/s
higher than the corresponding set
point
1. close ON/OFF contacts (relay/terminals
7I - 8I)
2. check the external connection
3. replace the humidistat
4. set parameters A0, A2-A9 correctly
5. check the values of the set point St and
P7
the humidifier fills with water
without producing steam
1. high steam back pressure
2. fill valve strainer clogged
3. mineral in the fill cup
4. drain solenoid valve leaking
1. check that the steam hose is not kinked
or sagging, trapping condensate
2. clean the fill valve strainer
3. clean the fill cup
4. check for 24Vac at the drain solenoid
valve and/or drain solenoid replacement
the thermal-magnetic overload
switch is activated
1. thermal-magnetic overload
switch is under-rated
2. over-current at the electrodes
1. check that the thermal-magnetic
overload switch is rated for a current of at
least 1.5 times the rated current of the
humidifier
2. see description for alarm EH
the humidifier wets the duct
1. the distributor is not installed
correctly (too near the top of the
duct or the condensate return is
blocked)
2.system over-sized
3.humidifier active when the fan in
the duct is off
1. check that the steam distributor is
installed correctly
2. decrease the steam production set on
the control
3. check the connection of the device (flow
switch or differential pressure switch)
slaving the humidifier to the ventilation in
the duct (terminals 7I - 8I)
the humidifier wets the floor
below
1. the humidifier drain is blocked
2. the supply water or overflow
circuit has leaks
3. the condensate drain pipe does
not bring the water back to the
drain pan
4. the steam hose is not properly
fastened to the cylinder
1. clean the drain assembly and pan
2. check the entire water circuit
3. check the correct position of the
condensate drain hose in the drain pan
4. check the fastening of the hose clamps
on the steam outlet
