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Page 14
TROUBLESHOOTING (cont.)
PROBLEM PROBABLE CAUSE REMEDY
Water does not heat to proper
temperature (cont.)
IMPORTANT: Make sure no tem-
perature tests are taken before the
ready light is "ON". Tank tempera-
ture must be stabilized before read-
ings are taken.
Spitting or excessive steaming
4a. Temperature Probe (CDBC-APS/
TC/TS/TSR)
4b. Temperature Probe (CEZ-APS/
TS/TSR)
5. Limit Thermostat (CDBC-APS/
TC/TS/TSR & CEZ-APS/TS/TSR)
6. Tank Heater (CDBC-APS/TC/TS/
TSR & CEZ-APS/TS/TSR)
1. Lime build up on temperature
probe, tank or tank heater
A) Remove the probe from the grom-
met and submerge in a water bath
of approximately 70°F(21°C). Con-
nect an ohmmeter to pins 3 and 4 of
the J3 connector. At 60°F(16°C)
the reading should be 15.3k ± 2k
OHMS, at 70°F(21°C) the reading
should be 11.8k ± 2k OHMS, and at
80°F(27°C) the reading should be
9.3k ± 2k OHMS. If the probe is
within these parameters, reconnect
the J3 plug to the control board.
B) Remove the probe from the grom-
met and submerge in a water bath
of approximately 70°F(21°C). Con-
nect an ohmmeter to pins 2 and 3 of
the J5 connector. At 60°F(16°C)
the reading should be 15.3k ± 2k
OHMS, at 70°F(21°C) the reading
should be 11.8k ± 2k OHMS, and at
80°F(27°C) the reading should be
9.3k ± 2k OHMS. If the probe is
within these parameters, reconnect
the J5 plug to the control board.
Disconnect the brewer from the
power source. Check for continuity
across the limit thermostat termi-
nals. Continuity should be present.
If not replace the limit thermostat.
(See page 27)
Disconnect the brewer from the
power source. Check for continuity
between the white terminal of the
terminal block and the black wire on
the relay on the control board. There
should be a low OHM reading. If no
continuity is present, check for a
wiring problem, then replace the
tank heater if no wiring problem is
found. (See page 28)
Inspect probe and tank assembly
for excessive lime deposits. Delime
as required.
HEATING CIRCUIT (cont.)
29253 111103