F
ault Codes
D
ip Switch Settings
27
28
Central Timer
Control
Stand Alone
Control
off on
off on
1
2
3
4
1 Computer
Programming
2 Computer
Programming
3
Central Control System
4 Emergency
Cut
Off
If controlled by a central timer, dip switch 3
must be in the ON position.
To use a time clock you will also require a
transformer and sub PCB available from Rinnai.
When a time clock is used the appliance On/Off
button will not operate.
If Emergency cutoff loses signal unit will stop.
Emergency Cut Off can not be used with
Central Control System.
HI
Overheat
Switch
Blocked Flue Terminal
Blocked Air Filter
Power Failure
Warm Air Obstruction
Gas Type
Gas Pressure
Convection Fan coil resistance
PCB voltage to Convection Fan
PCB voltage to Overheat Circuit
Thermal Fuse Resistance
Overheat Switch Resistance
CI
Room Temp
Sensor Faulty
Room Temp Thermistor Resistance
C2
Overheat Temp
Sensor Faulty
Overheat Thermistor Resistance
H6
Overheat
Thermal Fuse
dI Sparker
Failure
PCB
Sparker input voltage
Spark Gap
bI & Com-
bustion Lamp
No Ignition
Flame Rod carboned up
PCB
Blocked burner ports
Blocked Flue Terminal
Gas Type
Combustion Fan
Gas Pressure
EO
Communication
Error (Ghost
Flame)
PCB
Flame Sensor
Sparker
b3 + Com-
bustion Lamp
Flame Failure
Physical Blockages
Flame Rod
n2
Air Proving
Device
Blocked Flue
Faulty PCB
Combustion Fan
Kinked/disconnected air tube
Heat Exchanger Blocked
Air Proving Senser
n1
On/Off Button
Faulty
Check On/Off switch
sub PCB
PCB