Rinnai ENERGYSAVER RHFE-308FTR, Service Manual

Page: 44 / 64

Energysaver RHFE-308 FTR - 40 - ©Rinnai
22. Testing
Test Mode Summary
Test Mode 1 - This mode cancels temperature control, and starts combustion mode.
Test Mode 2 - This mode controls the modulating valve and convection fan (Normally, this test
mode is used when converting gas type and changing the PCB).
* Operating Procedures and Indicator
(A) Test Mode 1
Note: Indicators (digital display “00" and “22", “24", “26" and “HIGH” indicators) show that
modulating valve and/or convection fan adjustment is complete.
Digital Display
The indicators will be off when the PCB unit is replaced.
Indicators will illuminate after test mode 2 adjustment is completed.
2. Indicators (digital display “LO”, “Cu”, “Hi” and “LO”, “16", “18", “20" indicators) may be flashing
at times. This means the combustion mode is in transition (eg. Changing from LOW
→
MED). The
indicators will glow steadily once combustion mode stabilises.
(B) Test Mode 2 (Adjusting Modulating Valve)
See “Gas Pressure Setting Procedure” on pag e43.
Operating Procedures Illuminated Indicators
1. Turn the appliance on (combustion indicator illuminates).
Press test mode switch (SW 5) at top of the PCB (combustion
mode changes to “Low” test mode).
LOW
2. Change combustion and convection fan mode using the
Temperature/Time setting switch located on the control
panel.
The mode changes from LOW
→
MED
→
HIGH each
time the “/\” switch is pressed.
The mode changes HIGH
→
MED
→
LOW each time the
“\/” switch is pressed.
MEDIUM
HIGH
3. Return operation to normal by pressing the test mode switch
(SW 5) again.
Displays temperature.
Sections of the digital display show that the
following adjustments have been completed:
1) Modulating Valve (LOW)
2) Modulating Valve (HIGH)
3) Convection Fan (LOW)
4) Convection Fan (HIGH)