Rheem 325 II Series - Heat Pump Mode

22
This document is stored and maintained electronically by Service. All printed copies are deemed uncontrolled.
TM077: 325 & 410 Series II Heat Pump Service Instructions
Rev 00: Issued April 2014
Heat Pump Mode
FIRMWARE: V5.8
Reset button pressed
at any stage
NOTE
The reset button will cancel the 45
minute start delay, reset the Fault 9
counter and clear any stored Fault
Code from the controller memory.
F
B
System Check
Green LED – 1 flash
90 minutes has
elapsed?
At least 15 minutes
since the circulator
last ran?
Evaporator sensor
< 1ºC for more than
15 minutes?
YES
Circulator on
Circ. Speed: Maximum
Green LED – 4 flashes
NO
Faults 1, 5 or 6
detected?
Circulator has been
on for 30 seconds?
Circulator off
Green LED – 1 flash
Circulator off
Green LED – Off
YES
NO
L
Fault detected?
Compressor on
Evaporator fan on
Green LED – 2 flashes
Compressor off
Evaporator fan off
Green LED – Off
D
YES
Green LED – Off
After 30 seconds
Circulator on
Circ. Speed: Variable
YES
HX water outlet
sensor > 35ºC for
more than 2 minutes?
Circulator speed
= maximum?
Fault detected?
NO
Compressor has
been operating for at
least 10 minutes?
Evaporator sensor
< -3ºC or > 40ºC?
NO
Circ. Speed: Maximum
Green LED – 3 flashes
YES
Compressor off
Evaporator fan off
Circulator off
G
Compressor has
been operating for at
least 10 minutes?
Fault detected?YES
NO
Compressor off
Evaporator fan off
Circulator off
Green LED – Off
YES
Compressor off
Evaporator fan off
Circulator off
Green LED – Off
YES
Evaporator sensor
< -3ºC or > 40ºC?
NO
Compressor off
Evaporator fan off
Circulator off
Tank
sensor > 60ºC?
12I G
Clear Fault Code from
controller memory
Reset Fault 9 counter
YES
E
NO
NO
J
YES
YES
Compressor off
Evaporator fan off
Circulator off
Green LED – Off
YES
Compressor has
been operating for at
least 10 minutes?
NO
HX water outlet
sensor > 22ºC?
NO
NO
NO
YES
NO
YES
H D
NOYES
NO
Fault detected?
D
NO
D
YES
NO
NO
YES
YES
45 minute start delay
has elapsed? (From
last compressor shut
down or from
restoration of power.)
YES
NO
NO
Compressor
sensor > 60ºC?
YES
YES
Fault detected?