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SYMPTOM
IRREGULAR YIELD
DRY COFFEE REMAINING
IN BREW BASKET AFTER
BREWING
WEAK COFFEE
SOLENOID CHATTER OR
HOWLING
COLD WARMER STATION
TROUBLE SHOOTING GUIDE
POSSIBLE
CAUSE
1. Not siphoning properly.
2. Timer.
3. Fluctuating water pressure.
4. Solenoid valve.
5. PDS valve
1. Filters.
2. Not siphoning properly.
3. Improper loading of the brew
basket.
1. Filters.
2. Not siphoning properly.
3. Improper loading of brew basket.
1. Brewer connected to hot water
line.
2. Vibration.
3. High water pressure.
4. Water hammer.
5. 60 cycle vibration.
1. Warmer - defective.
2. Warmer ON/OFF Switch.
3. Bad harness.
WHAT TO
CHECK
1. Refer to "DRIPPING", Step 1.
2. Timer consistency. Time several
brew cycles.
3. Water pressure.
4. Refer to "DRIPPING", Step 2.
5. Possible defective flow
control.
1. Are correct filters being used.
2. Refer to "DRIPPING", Step 1.
3. Filter and coffee in brew basket.
1. Are correct filters being used.
2. Refer to "DRIPPING", Step 1.
3. Filter and coffee in brew basket.
1. Incoming water line.
2. If brewer is on a metal stand or
counter, neither the bottom pan
nor copper tubing to the brewer
should touch the counter.
3. Water pressure on incoming line.
4. Incoming plumbing.
5. Nut on top of solenoid.
1. Voltage at warmer terminals
should be 120 volts AC.
2. If voltage is not present on warmer
terminals, check continuity of
switch.
3. Check connections between
harness and switch, and between
switch and warmer.
7
REMEDY
1. Refer to "DRIPPING", Step 1.
2. If times are irregular, replace timer.
3. If pressure fluctuates 10-20 PSI during
operation of brew cycle, add a pressure
regulator to inlet side of brewer, set to
lowest pressure level registered. Adjust
timer to yield correct water level.
4. Refer to "DRIPPING", Step 2.
5. Replace PDS valve
.
1. Insert correct filter.
2. Refer to "DRIPPING", Step 1.
3. Filter should be centered in the brew
basket and coffee bed should be level.
1. Insert correct filter.
2. Refer to "DRIPPING", Step 1.
3. Filter should be centered in brew basket
and coffee bed should be level.
1. Brewer should be connected to cold
water line.
2. Adjust as necessary.
3. If water pressure is over 90 PSI install a
pressure regulator and adjust to 50 PSI.
4. This is not the fault of the brewer and can
usually be corrected by rearranging some
plumbing or adding an air chamber to
the incoming water line.
5. Nut should be tight. Tighten as required.
1. If voltage is present on terminals, but
warmer will not heat, replace warmer.
2. If switch does not make and break
continuity when turned off, replace
switch.
3. All connections should be tight.
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