Carel gaSteam Benutzerhandbuch Seite 67

Problem
The controller does not turn on
The humidifier does not start
The humidifier fills with water
without producing steam
Line circuit breaker is activated
The humidifier wets the duct
The humidifier wets the floor below
Causes
1. no electrical power supply;
2. external switch in position 0;
3. control connectors poorly installed;
4. fuses blown;
5. transformer malfunction.
1. remote ON/OFF contact open
(relay/terminals 7Z - 8Z);
2. the external regulator/humidistat or probe
has not been connected correctly;
3. probe/humidistat malfunction;
4. parameters not set correctly.
1. steam outlet back-pressure too high;
2. leaking flow regulator in the water fill
solenoid valve (with leaks in the water
circuit);
3. level control malfunction;
4. boiler inlet filter blocked;
5. electric drain pump malfunction.
6. burner malfunction
1. the line circuit breaker is rated too low;
2. burner blower short-circuited.
1. the distributor is not installed correctly;
2. the system is rated too high;
3. the humidifier is active when the duct
fan is off.
1. the humidifier pipe is blocked;
2. the water supply or overfill circuit has leaks;
3. the steam outlet pipe is not properly
attached to the boiler.
12.2 Troubleshooting
Solution
1. check the protection devices upstream of the humidifier
and the mains power supply;
2. close the switch: position I;
3. check that the connector are properly installed
on the terminal block;
4. check the state of fuses F1/F2;
5. check that the secondary of the transformer has an
output of 24Vac.
1. close ON/OFF contacts (relay/terminals 7Z - 8Z);
2. check the external connection;
3. check the external signal;
4. reprogram the parameters correctly.
1. check that the steam outlet pipe is not bent or choked;
2. replace the fill solenoid valve;
3. clean the level control or replace if necessary;
4. clean the filter;
5. check the presence of 230 Vac on electric drain pump;
cleaning the electric drain pump.
6. check the gas opening, fume exhaust flow and air inlet
1. check that the circuit breaker is rated for a current
of at least 1.5 times the rated current of the humidifier;
2. replace the burner blower.
1. check that the steam distributor has been installed correctly;
2. diminish the steam production set on the control;
3. check the connection of the device (flow switch or
differential pressure switch) linked to the humidifier for
ventilation in the duct (terminals 7Z - 8Z).
1. clean the pipe in the bottom tank;
2. check the entire water circuit;
3. check the fastening of the pipe clamp on the steam
outlet pipe.
61
Table 12.2.1
cod. +030221931 rel. 5.0 - 05.11.2003