30
Table 3. Alarm Faults
Alarm
Mgr
Alarm
ID
Category
Alert
Level
(Severe,
Low,
Info)
Local
Display:
Alert Title
Local Display: Alert
Detailed Description
M3-Specific
Description
IMC Error Description
IMC Action
41
Cooling
Severe
Return Air Under
Cool Limit
Return air temperature (RT16)
exceeded cooling limit set.
Check space conditions and
sensors.
Return Air Under
Cool Limit
Return air temperature (RT16) exceeded
cooling limit set in ECTO 5.07.
Cooling demand ignored. No
cooling.
42
Air Flow
Low
Blower Motor
Overload
Blower Motor is Overloaded.
System shutdown.
Blower Motor
Overload
Reserved.
43
Air Flow
Low
Strike3 Unit
shutdown S42 or
S135
S42/ S135 Motor Overload
-multiple times
Removed
Reserved.
44
Heating
Low
Gas Valve On No
Demand GV1
Gas valve 1 is energized but
no demand. (GV1). Check gas
control and wiring.
Gas Valve On No
Demand Gv1
Gas valve 1 is energized but no
demand. (GV1). Check gas control and
wiring.
Unit off
45
Heating
Low
Gas Valve On No
Demand GV2
Gas valve 2 is energized but
no demand. (GV2). Check gas
control and wiring.
Gas Valve On No
Demand Gv2
Gas valve 2 is energized but no
demand. (GV3). Check gas control and
wiring.
Unit off
46
Power
Low
No 24VAC Power
on A60
No 24VAC relay power on A60
(E1) board, K9-5 input. (A60)
Reserved
No 24VAC relay power on A60 (E1)
board, K9-5 input. (A60)
Second heat section off.
47
Power
Low
No 24VAC Power
on A58
No 24VAC relay power on
A58 (G1) board, TB35-1 input.
(A58)
Reserved
No 24VAC relay power on A58 (G1)
board, TB35-1 input. (A58)
Second heat section off.
48
Power
Low
No 24VAC Power
on A61
No 24VAC relay power on
A61(HP1) board, TB34-1 input.
(A61)
Reserved
No 24VAC relay power on A61(HP1)
board, TB34-1 input. (A61)
Second Compressor Off.
49
Power
Low
No 24Vac Relay
Power On C3
No 24VAC relay power on
A59 (C2) board, TB35-1 input.
(A59)
No 24Vac Relay
Power On C3
A59
No 24VAC relay power on A59 (C2)
board, TB35-1 input. (A59)
Third and fourth Compressor
Off.
50
Heating
Low
Primary Heat1
Limit Open
S10
Heat section 1 primary gas heat
limit switch is open. Check air
flow, air filter, limit switch and
wiring.
Primary Heat1 Limit
Open S10
• Gas Unit: S10, S130, or S131
(Primary Heat Limit) is open.
• Other Units: Jumper is open A55
P111 pin 1 and 2.
First heat section off.
51
Heating
Low
Strike3 Pri Heat
Limit Open
Heat section 1 primary gas
heat limit switch has opened
three (default) times during a
demand.
Strike3 Primary
Heat1 Limit Open
S10
• Gas Unit: S10, S130, S131 (Primary
Heat Limit) has opened three
(default) times during a demand
ECTO 3.04.
• Other Units: Jumper is open. A55
P111 pin 1 & 2.
First heat section off.
52
Heating
Low
Secondary Heat1
Limit Open
S21
Heat section 1 secondary gas
heat limit switch is open. Check
air flow, air filter, limit switch
and wiring.
Secondary Heat1
Limit Open S21
• Gas Unit: S21 (Secondary Heat
Limit 1) is open.
• Other Units: Jumper is open. A55
P111 pin 1 and 2.
First heat section off.
53
Heating
Low
Strike3 Sec Heat
Limit Open
Heat section 1 secondary gas
heat limit switch has opened
three (default) times during a
demand.
Strike3 Secondary
Heat1 Limit Open
S21
• Gas Unit: S21 (Secondary Heat
Limit 1) has opened three (default)
times during a demand ECTO 3.04.
• Other Units: Jumper is open. A55
P111 pin 1 and 2.
First heat section off.
54
Heating
Low
Heat1 S15
Limit Or Rollout
Open
Gas Unit: Flames have been
detected outside the gas
heater’s fire box.
Electric Unit: Primary Heat Limit
is open.
Heat1 S15 Limit Or
Rollout Open
• Gas Unit: S47 (Roll Out) is open.
• Other Units: S15 (El. Heat Limit) is
open.
First heat section off.