Fault Isolation Codes - Rinnai RHFE-551FA Service Manual

Fault Isolation Codes

Analog
Digital
Indicator
LED
Light
LO-HI PF -- Power Failure
:--
60 11 Missed Ignition Flame rod current
LO 12
68 14 Overheat Safety
HI 16
72 76 31
Disconnection
76 80 32
thermistor short
8
Name
Electric power has
been lost while the
appliance was running
does not reach 1.0
microamp within a
certain time after the
solenoid opens.
Flame Failure Flame rod current
remains below 1.0
microamp for 3
seconds during initial
combustion
High limit temperature
Device thermistor or thermal
fuse has activated
Over Room temperature is
Temperature above 104ºF for
Cut Off longer than 10
minutes
Room Room temperature
Temperature thermistor circuit is
Thermistor open
Room Room temperature
temperature thermistor wire is
trapped or touching
circuit bare metal.
Rinnai Direct Vent Service Manual
Definition
Check that the power cord is firmly inserted into
the electrical outlet.
Check the 3 amp fuse.
Check whether the fuse or breaker has blown at
the switch board.
Check that the flame rod is firmly positioned.
Check the flame rod lead.
Check the flame rod for carbon build up.
Check that the correct gas is being used.
Check the supply pressure at the meter and at
the appliance.
Check that there are no leaks in the gas supply
line or appliance.
Check for air in the gas supply.
Check that the correct gas is being used.
Check the supply pressure at the meter and at
the appliance.
Check that there are no leaks in the gas supply
line or appliance.
Check for air in the gas supply.
Check that the correct gas is being used.
Check the supply pressure at the meter and at
the appliance.
Check that the flue terminal is not blocked.
Check that the air filter is not blocked.
Check that the warm air flow is not blocked.
(There should be a clearance of 40 inches in front
of the appliance.)
Check that the correct gas is being used.
Check the supply pressure at the meter and at
the appliance.
Check that the flue terminal is not blocked.
Check that the air filter is not blocked.
Check that the warm air flow is not blocked.
(There should be a clearance of 40 inches in front
of the appliance.)
Check the circuit. (troubleshooting)
Check the circuit. (troubleshooting)
Corrective Action