Board 70 - Roof Top Package Unit - 2 Stage
Electrical Ratings
CBM: 4.4 FLA
BM: 6.9 FLA
Key
FLA
Full Load Amps
G
Fan 24 VAC circuit
GV
Gas Valve
HR
Holding Relay
IDM
Induced Draft Motor
IDR
Induced Draft Relay
IFC
Indoor Fan Contactor
IFM
Indoor Fan Motor
ICP
Igniter Control Pack
IGN
Ignition
L1
Line 1
L2
Line 2
LS
Limit Switch
PS
Pressure Switch
R
24 VAC supply
RS
Roll Out Switch
SEN
Sensor
T1
Transformer 1
TDR
Time Delay Relay
W1
First Stage heat 24 VAC circuit
W2
Second Stage heat 24 VAC circuit
Submit Your Diagnosis
Blower Motor seized
Blower Motor windings grounded
Blower Motor windings open
Combustion Air Proving Switch open
Contacts welded closed
Control circuit open
Flame Roll Out Switch open
Gas Valve faulty
Ignition Control locked out / faulty
Inadequate Air Flow
Induced Draft Motor seized
Induced Draft Motor windings grounded
Induced Draft Motor windings open
Limit open
No Faults
No gas pressure
No power
Regulator overfeeding
Relay coil grounded
Relay coil open
T-Stat not calling
Time Delay Relay faulty
Transformer winding open
