1.
No Power to the Control Panel
a.
Check to be certain unit is plugged into 240vac outlet
and that there is power at the outlet.
b.
Check fuses F1 & F2 on the DIN rail in the back of the
machine. These are the Line 1 and Line 2 supply fuses.
If blown, replace with 5x20mm 3.0A 250V fast blow
fuses. DO NOT REPLACE WITH OVERSIZED FUSES.
c.
Check the toggle switch to see if it is lit when
switched on. This should indicate that power is
getting to the switch.
d.
Check for 240vac power between the bottom switch
terminals. Once the switch is flipped check for
240VAC at the top two terminals on the switch.
Replace if necessary.
e.
The control itself could be malfunctioning or
internally damaged. This is only rarely seen. Call for
assistance.
2.
Matilda® Does Not Heat:
Be certain that breakers on the back of the machine
are not tripped. If the breakers are being tripped, the
system is likely being shorted to ground. Look for
damage to the power cord, terminal blocks and
heaters to indicate trouble areas. Have the system
checked by a certified electrician before operating.
a.
Has the over-temperature switch on the back of the
tank tripped? Check continuity across the
temperature switch terminals.
b.
Is there power getting to the relays? Check for
230VAC across the lower terminals of relays 1 and 2
on the power board.
c.
Once activated, check continuity across the terminals
of each relay on the power board and across SSR
Terminals 1 and 2 to be certain they are closing.
d.
Is the DC signal from the control arriving at the SSR?
Check across SSR Pins 3 and 4 for 24VDC.
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