2008T Troubleshooting Guide
P/N 490292 Rev. A
T- 1.0.22 TEMPERATURE LESS THAN 35.1° C
a) Set your volt meter to AC volts (~ V, V
AC
)!
b) Figure right, unplug the connector from the 1
st
distribution
board position from the left, “CON-NTC”. This is NTC #2.
c) Figure right, measure at the distribution board’s Heater
Connector, BETWEEN the BROWN and BLUE wires.
d) TWO (2) possible scenarios:
1) IF (and ONLY if) less than 100.0 volts AC:
Leaving NTC #2 unplugged till instructed, proceed
to
page 281, procedure number T- 2.0.0.
2) IF MORE THAN 100.0 volts AC: Leaving NTC #2
unplugged, see parts a AND b below:
a) ENSURE the external flow indicator’s ‘bob’ is moving up and down.
b) WITHOUT LOOKING AWAY, watch the meter for UP TO SEVEN (7) minutes OR until if it
EVER reaches more than 35.5° C even if only once?
Yes 35.5° C OR more! See procedure number T- 1.0.23 (page 252).
No Less than 35.5° C! Either incoming water is EXTREMELY cold OR you made an
error and heater voltage is NOT more than 100 volts AC OR the heater is intermittent
bad.
T- 1.0.23 MEASURED TEMPERATURE, WITH NTC #2 UNPLUGGED, EXCEEDS 35.5° C
a) Return NTC #2’s connector to 1
st
distribution board position from the left, “CON-
NTC”.
b) If a 6.04 KΩ plug was previously placed at NTC #3’s distribution board position (“MON-NTC”) remove it
and return NTC #3’s connector to the
2
nd
position from the left!
c) Call debug screen 4 to see TEMP (lower left). TWO (2) possible scenarios:
1) IF (and ONLY if) 4.0 or more: NTC #3 is okay. See procedure number T- 1.0.24 (page 252).
2) IF LESS THAN 4.0: NTC #3 is plugged in incorrectly OR is bad. To LOCATE NTC #3 refer to
Figure 42 (page 236).
T- 1.0.24 TEMP IS 4.0 OR MORE
a) If a 274 Ω plug was previously placed at the Cond Cell’s distribution board position, “X7, COND”,
remove it and return the Cond Cell’s connector.
b) Proceed to
page 278, procedure number T- 1.8.0.
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