Operation Flow Chart - Rinnai ENERGYSAVER RHFE-308FTR Service Manual

12. Operation Flow Chart

Connect power cord
and turn power ON
No


E Prom trans-
mission Normal
Yes
1
Turn ON/OFF switch ON
A
ON/Combustion
indicator flashes green
Room temp. displayed
No
SV circuit
Normal
Yes
OHS & TF
No
2
Normal
Yes
O.H
(After 2 Sec from a)
No
Thermistor
3
Normal
Yes
Room
(After 2 Sec from a)
Temp.Thermistor
4
Normal No
Yes
Flame rod
No (After 20 Sec from a)
current below
6


0.1 A
Yes
Combustion Fan HI ON
Combustion No
15
Fan >1710
rpm
Yes
Combustion Fan LOW
Flame rod
No
6 current below


0.1 A
Yes
Combustion
No
9
fan > ignition
+
60 rpm
Yes
Sparker activates
10
Spark sensing No
Normal
Yes
b
11 Solenoid SV1 Opens
Solenoid SV2 Opens
12
Mod. Valve half opens
c
Flame sensed
6


above >1 A
Yes
ON/Combustion
indicator flashes red
Sparker OFF
Combust'n fan (med) ON
C B
Energysaver RHFE-308 FTR
Problem eliminated
73
ON/Combustion
indicator flashes red
a
71
ON/Combustion
indicator flashes red
14
Filter indicator flashes
ON/Combustion
indicator flashes red
33 (open circuit)
34 (short circuit)
ON/Combustion
indicator flashes red
33 (open circuit)
34 (short circuit)
ON/Combustion
indicator flashes red
72
ON/Combustion
indicator flashes red
(After 15 Sec)
Combustion Fan OFF
(After 10 Sec)
(After 20 Sec)
Combustion Fan OFF
(After 30 Sec)
Combustion Fan OFF
Combustion Fan OFF
(After 2 Sec)
Sparker OFF
Yes
No
15 sec after b
No
Yes
No
Spark sensor
Normal
(After 1 sec)
61
ON/Combustion
indicator flashes red
72
ON/Combustion
indicator flashes red
61
ON/Combustion
indicator flashes red
53
ON/Combustion
indicator flashes red
Solenoids SV1, 2 close
Modulating Valve closes
Combustion Fan OFF ON/Combustion
indicator flashes red
Sparker OFF
Solenoids SV1, 2 close
Modulating Valve closes
Combustion Fan OFF
ON/Combustion
indicator flashes red
Sparker OFF
- 18 -
Problem eliminated
All indicators OFF
Turn ON/OFF
switch OFF
11
53
H
©Rinnai