Graco HFRL Setup And Operation Manual page 93

Error
Code Error Name Error Description
Red Blanket
T6C6
RTD Fault
Blue Blanket
T6C5
RTD Fault
RTD 2 is giving no or invalid
data
Red Chiller
T6C7
RTD Fault
Blue Chiller
T6C8
RTD Fault
No Heat Red
T8A6
Tank
No Heat Blue
T8B5
Tank
No Heat Red
T8A3
Inline
No temperature rise
No Heat Blue
T8B1
Inline
No Heat Red
T8A2
Hose
No Heat Blue
T8B4
Hose
No Cooling
T8A7
Red Chiller
No temperature decline
No Cooling
T8B8
Blue Chiller
Red Blanket
T9A6
Temp. Cutoff
Blue Blanket
T9B5
Temp. Cutoff
Heater overtemperature cutoff Alarm
Red Inline
T9A3
Temp. Cutoff
Blue Inline
T9B1
Temp. Cutoff
3A2175Z
Error
Type Cause
Loose or bad connection Check RTD wiring
Alarm
Bad RTD
Tripped circuit breaker
Alarm
Low Power
Cable unplugged/loose
power
Bad heater(s)
Tripped circuit breaker
Defective cooling valve
Alarm
Chilled water supply off Turn on chilled water supply
Loose or bad connection Check RTD wiring
Defective RTD
Defective High Power
Temperature Control
Module
Loose connections
Appendix D - ADM Error Codes
Solution
Replace RTD
Visually check circuit breaker for a tripped condition
Measure voltage across input terminals on power line
filter. Voltage should measure between 190 and 264
Vac
Check for loose or disconnected wires or plugs
Measure resistance of heater(s)
Visually check circuit breaker for a tripped condition
Disconnect the valve and measure the voltage across
the wires when the chiller is running to ensure 24V is
being delivered to the valve. If so, the cooling valve
will likely need replacing.
Replace RTD
Replace High Power Temperature Control Module
Tighten connections
93