Rinnai REU-16 Service Manual page 28

Error Codes
Error Fault
Appliance does not operate at all.
No error code on display (if there
is a controller), Acts as though
-
there is no water going through
the unit and/or it seems electri-
cally dead.
Combustion stops during opera-
-
tion.
Cannot adjust the hot water tem-
- perature via the controllers - only
if controllers are installed.
Anti - Frost Heater does not oper-
-
ate.
Upon commissioning the gas
- pressure will not achieve correct
high pressure
Unit makes a loud noise while
-
operating
- fluctuating temperatures.
Action
Make sure that if there is a controller, it is on
Ensure there is enough water flow
Check Filter
Check for Air lock
Check power cord is plugged in (if applicable)
Check electrical supply is turned on
Check Non Return Valves and Mixers in System
Check Gas Isolating Valves are open
Check for short circuits
Check Remote control
Check Power supply voltage
Check electrical fuses
Check Sparker
Check Earth Wire
Check water flow sensor
Check transformer
Reset unit if there was a power cut
Check Filter
Check Remote control
Make sure that if there is a controller, it is on
Check Gas Supply is okay
Check Flame Rod
Check Flue
Check Earth Wire
Check Power supply voltage
Check hot water outlet thermistor
Check Heat Ex outlet temperature thermistor
Check Gas Valves are open
Check water flow servo
Check Non Return Valves and Mixers in System
check bypass servo
Check Solenoids
Check anti frost heater components
Check frost sensing switch
Check Gas Supply is correct
Check Gas Filter
Check flue terminal for blockages
Check Flue
Check Combusion Fan
Check Flue
Check water flow servo and bypass servo
Check Non Return Valves and Mixers in System
Check Hot water outlet thermistor
Ensure there is enough water flow
Check Solenoids
Check water flow servo
Check Filter
Check Gas Supply is correct
28
Step
visual
R
Q
M
visual
visual
L
visual
visual
I
N
O
B
H
J
P
Q
I
visual
S
C
V
H
N
K
K
visual
G
L
G
D
T
U
S
F
visual
V
A
V
G
L
K
R
D
G
Q
S