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OPERATIONAL SEQUENCES
System Start-Up and Standby Mode
Power to controller
System Start-Up
for 3 seconds
Green LED – Rapid flash
Is there a stored Fault
YES
Code?
NO
Main relay energised
Fault 9 has occurred
YES
3 consecutive times?
NO
Fault detected?
YES
NO
Tank
NO
sensor < 50ºC?
YES
Evaporator sensor
< 4ºC or > 45ºC?
NO
F
Reset button pressed
during Standby Mode
TM077: 325 & 410 Series II Heat Pump Service Instructions
Rev 00: Issued April 2014
This document is stored and maintained electronically by
Mechanical thermostat
contacts close
B
Green LED – Off
Red LED – Display stored
Fault Code for 27 seconds
Green LED – Off
Red LED – 9 flashes
Green LED – Off
Standby Mode
Green LED – On solid
G
YES
B
A
C
D
At least 45 minutes
since the compressor
NO
last ran?
YES
At least 15 minutes
since the circulator
NO
last ran?
YES
Evaporator sensor
< 1ºC for more than
NO
15 minutes?
YES
Circulator on
Circ. Speed: Maximum
Green LED – 4 flashes
Service. All printed copies are deemed uncontrolled.
FIRMWARE: V5.8
NOTES
1. The reset button will reset the
Fault 9 counter and clear any
stored Fault Code from the
controller memory.
2. The reset button does not
function during System Start-Up
or the Last Fault Code display
function.
E
Circulator off
Green LED – On solid
YES
Circulator has been
on for 30 seconds?
NO
NO
Faults 1, 5 or 6
detected?
YES
Circulator off
Green LED – Off
D
20
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