GeneralAire DS20 Elite Steam - Manual (Page 17)

Installation, Operating and Maintenance Manual
17
Troubleshooting table
Problem Causes Solution
The humidifier does
not turn on
1. No electrical power;
2. On/Off switch of the humidifier in Off
position (O);
3. Improper connection;
4. Blown fuses;
5. Transformer fault;
6. Humidistat or air flow switch not closed
1. Check the external fuses and breakers
and for power at the humidifier;
2. Turn the On/Off switch On (I);
3. Check that the power wires 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
6. Jump out airflow & humidistat
The humidifier does
not start operation
1. Humidistat or air flow switch open;
2. The humidistat has not been connected
correctly;
3. Humidistat fault
1. Fix or replace humidistat or air flow switch;
2. Check the external wiring
The humidifier fills
with water without
producing steam
1. Too much backpressure in steam hose;
2. Cylinder drain screen blocked;
3. Lime scale in the fill cup;
4. Drain valve malfunction
1. Check that the steam outlet pipe is not
bent or choked;
2. Clean the filter;
3. Clean the fill cup;
4. Check for the presence of 24vac at the
drain electrovalve and/or replace drain
electrovalve
Breaker opens
Circuit breaker is under-rated Check that the thermal-magnetic overload
switch is rated for a current of at least 1.5
times the rated current of the humidifier
The humidifier wets
the duct
1. The distributor is not installed correctly;
2. Humidifier over-sized;
3. Humidifier active when the fan in the
duct is off
1. Check that the steam distributor is
installed correctly;
2. Change humidifier model;
3. Check the connection and condition of the
airflow switch
The humidifier wets
the floor below
1. The humidifier drain is blocked;
2. The supply water or overflow circuit has
leaks;
3. The steam outlet pipe is not properly
fastened to the cylinder
1. Clean the drain in the bottom tank;
2. Check the entire water circuit;
3. Check the fastening of the pipe clamps on
the steam outlet