CLIMATEMASTER WATER-SOURCE HEAT PUMPS
Tranquility
®
(TRL) Series
R e v. : N o v e m b e r 1 1 , 2 0 2 1
C l i m a t e M a s t e r Wa t e r-S o u rc e H e a t P u m p s
40
CXM2 Controls, Cont’d.
Table 5: LED and Alarm Relay Output Table
CXM2 CONTROLLER FAULT CODES
CXM2 Status LED Operation with Test
Mode Not Active
Fault LED
(Red)
Status LED
(Green)
Alarm Relay
CXM2 is non-functional
Off
Off
Open
Normal operation -
No active communication
On
On
Open
Normal operation -
With active communication
Very Slow Flash
On
Open
Control is currently in fault retry mode
Slow Flash
–
Open
Control is currently locked out
Fast Flash
–
Closed
Control is currently in an
over / under voltage condition
Slow Flash
–
Open (Closed
after 15 min.)
(ESD) Emergency shutdown
condition recognized
–
Flashing Code 3
Closed
Invalid thermostat input combination
–
Flashing Code 4
Open (Closed
after 15 min.)
CXM2 Status LED Operation with
Test Mode Not Active
Fault LED
(Red)
Status LED
(Green)
Alarm Relay
No fault since power up in memory
Flashing Code 1
–
Cycling Code 1
High pressure fault in memory
Flashing Code 2
–
Cycling Code 2
Low pressure fault in memory
Flashing Code 3
–
Cycling Code 3
Low temperature protection
1 fault in memory
Flashing Code 4
–
Cycling Code 4
Low temperature protection
2 fault in memory
Flashing Code 5
–
Cycling Code 5
Condensate overflow fault in memory
Flashing Code 6
–
Cycling Code 6
Over / Under voltage fault in memory
Flashing Code 7
–
Cycling Code 7
UPS warning in memory
Flashing Code 8
–
Cycling Code 8
UPT fault in memory
Flashing Code 9
–
Cycling Code 9
Low water flow fault
Flashing Code 13
–
Cycling Code 13
Leaving water temperature low fault
Flashing Code 14
–
Cycling Code 14
Test mode active
–
Fast Flash
–
– Fast Flash = 2 flashes every 1 second
– Slow Flash = 1 flash every 2 seconds
– Very Slow Flash = 1 flash every 5 seconds
– Numeric Codes = On pulse 1/3 second; Off pulse 1/3 second followed
by a 10 second delay
– ECM Airflow = 1 flash per 100 CFM; On pulse 1/3 second followed
by a 10 second delay
– Alarm Relay Open = alarm signal off; Alarm Relay Closed = alarm signal on