Service manual

B. NO HEAT CONDITION (STEAM MODELS)

The following procedure must be performed with the microprocessor controller in the normal operating mode,

and the heat dot on, and the L.E.D. heat output light is on. Make sure that 80psi +/- 10 is supllied to the 3-way

microvalve. Your check for voltages should be 24 VAC unless otherwise specified.

1. Check for voltage across the two in-line connectors

that the 3-way microvalve is connected to. If voltage is

evident, replace steam valve solenoid.

2. Check for voltage between TB#4 and #7. If voltage, is

evident, problem is bad wire or termination in harness

between TB#4 and TB#7 to the two in-line connectors

for the 3-way microvalve.

3. Check for voltage between TB#3 and #7. If voltage is

evident, problem is faulty basket hi-limit (ADC P/N:

130103), or bad wire or termination harness between

TB#3 AND #4 to the basket hi-limit.