Wrong voltage applied  

• Check coil marked voltage is correct for the voltage being supplied.
• Change the solenoid coil for the correct one.
• Check wiring and wiring diagram.
• Check voltage tolerance, typically +/- 10% or 15%.

Coil short circuit

• Check remaining installation for short circuit.
• Check electrical connections at coil and DIN connector.
• Check moisture in coil, replace as required. Check IP ingress protection is in accordance to requirements.

Coil armature slow

• Isolate the electrical supply
• Drain the system
• Carefully remove the armature assembly, which will have small internal parts and replace.
• Install a well ventilated guard to protect the solenoid valve armature.
• Clean armature assembly or replace.
• Install a filter, such as our RPE filter assembly to remove debris in media and/or try to mount solenoid valve with armature vertical so any small particle debris will tend to gravitate down and flush out.

Media temperature too high

• Check media temperature is correct for the solenoid valve specification.
• Move solenoid valve away from the heat source into a cooler area or increase ventilation