Diagnostic Mode - Atwood HE-0601 Service Manual

DIAGNOSTIC MODE WORK INSTRUCTION OF REFRIGERATOR rev 1
(NOTE: The diagnostic mode is only accessible from a normal, power on condition)
1. Make sure the refrigerator is powered on and functioning normally.
2. To enter the Diagnostic Mode, perform the following steps:
1. Press and hold both the TEMP and MODE pushbuttons together while watching the LEDs on the left
hand side of the display board;
2. After about 2 seconds of holding both pushbuttons down, both the CHECK LED and the leftmost bar
indicator on the temperature setting LEDs will turn on.
3. Release both the TEMP and MODE pushbuttons within 1 second of the two LEDs becoming lit and
the display will be in the diagnostic mode.
a) The CHECK and the leftmost bar both ON indicates that the display is in diagnostic mode
b) The AUTO, GAS, and AC LEDs indicate the contents of the stress level counter in binary
with the AC indicator being the least significant bit and the AUTO indicator being the most
significant bit
c) The 3 LEDs on the right-hand side of the temperature setting LEDs indicate the tilt position
angle of the power board in binary with the rightmost LED being the least significant bit.
4. To exit the diagnostic mode and return to normal operation, press either the MODE or TEMP buttons.
4. Normally the tilt angle position is zero (all LEDs OFF) when the powerboard is mounted on the
refrigerator and the refrigerator is standing vertical. As the powerboard is tilted approximately 5
degrees either to the right or the left, one rightmost LED will light. As the powerboard is tilted to 10
and 15 degree angles off of vertical, the tilt position will count up in binary to "010" and "011"
respectively. When the refrigerator is returned to the vertical position, all three LEDs should again be
OFF. This indicates that the tilt sensor is performing normally. If none of the LEDs turn on as the
refrigerator is tilted thru these angles – you should contact an authorized service center immediately.
If when the refrigerator and the powerboard are standing vertical and all three of the LEDs are not
OFF – this indicates that the tilt calibration procedure may need to be performed. Please contact an
authorized service center.
5.
Normally the stress level counter is zero (all LEDs OFF) indicating that the control has not been
operated at severe position angles for any length of time. It is possible that the counter might display
"001" or a "010" – this indicates that the refrigerator had been operated at a severe angle for short
periods of time. The owner should be alerted that better care of leveling needs to be taken when
operating his refrigerator particularly during long-term storage. If the counter displays "110" or
"111" - the owner should contact an authorized service center immediately as the refrigerator has
been operated for long periods of time at severe position angles
HE-0601
HE-0801

DIAGNOSTIC MODE

GAS ABSORPTION
RV REFRIGERATORS
(Both LEDs ON)
STRESS LEVEL COUNTER
(Binary Indication)
TILT ANGLE POSITION
(Binary Indication)
.