Rheem SVC 810, Troubleshooting Manual

Page: 39 / 82

SVC 810 Tankless Troubleshooting Manual
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4. Press the SW3 button on the main communication PCB to change to trial operation mode.
The left two digits of the LED display will indicate the water heater selected and will
illuminate continuously. At the same time, the LED lamp on the main communication PCB
or the extended communication PCB corresponding to the water heater selected will
illuminate and indicate the water heater is in trial operation mode.
5. Open the hot water outlet. Check and ensure safe operation and performance of the water
heater selected.
6. Change the DIP switch #1 setting to the “OFF” position (DOWN) to end the trial operation
mode.
7. To choose different water heater for trial operation repeat steps 3 through 6.
MIC 180 Maintenance Mode Table
SW3 Item Number
0 1 2 3 4 5 6 7 8 9
E PC Version Error code for n time ago Not in use
F Not in use Sequence number for n time ago Not in use
C Upper digits of
total times of
combustion Upper digits of the number of occurrence of
combustion at the time of error n times ago
(X10000) Not in use
d Lower digits of
total times of
combustion Lower digits of the number of occurrence of
combustion at the time of error n times ago
(X100) Not in use
H Upper digits of
total duration of
combustion Upper digits of the duration of combustion at the
time of error n time ago (X1000) Not in use
J Lower digits of
total duration of
combustion Lower digits of the duration of combustion at the
time of error n time ago (X10) Not in use
Y Not in use Not in use Not in use
SW2 Group Number
A Not in use Not in use Sequence
number on
the Control
Board
Maintenance Information Mode
1.
DIP switch #1 on the Unit Number Control Board to the “ON” position
2. DIP switch #3 on the Unit Number Control Board to the “ON” position
3. The hot water heater unit number can be selected by depressing SW2 on the Control Board.
The water heater unit number, which is displayed on the left two digits in the Control Board,
will be flashing.
4. The Maintenance Mode can be selected by depressing SW3 on the Control Board. The water
heater unit number will change from blinking to steady ON.