42
a.
# Disconnect the modulating valve festoon C2
terminals and measure the resistance at the terminals.
Normal: 67 ~ 81 Ω
If normal, check b.
Faulty: Replace gas valve.
(Service Procedure IGE-9, page 50)
b.
Re-connect terminal C2 and measure voltage
across the pink ~ pink wires when the unit is firing.
Normal: 2 ~ 15 VDC
If normal, check c below.
Faulty: Replace the PCB unit.
(Service Procedure IGE-2, page 47)
c.
Investigate the change in the manifold gas
pressure, when the remote control pre-set
temperature is altered from 96 ~ 140 ºF.
Normal: If the manifold pressure changes,
proceed to check item 4 below.
DO NOT
adjust manifold pressures.
Faulty: Replace gas valve.
(Service Procedure IGE-9, page 50)
a.
# Disconnect connector B2 and measure the
resistance of the water flow servo, red ~ blue wires.
Normal:
22 ~ 26 Ω
If normal, proceed to b.
Faulty:
Replace the water flow servo and sensor.
(Service Procedure IGE-2, page 47)
b.
Disconnect connector B2 , and measure the
voltage on the PCB unit side, were the orange
(+), and/or grey or black (-) wires connect to the board.
Normal:
3.3 ~ 4.5 VDC
If normal, proceed to c.
Faulty:
Replace the PCB unit.
(Service Procedure IGE-2, page 47)
c.
With connector B
2
, connected (do not turn water
ON … wait for the water flow servo to return to
fully open), measure the voltage at the brown ~
grey wires.
Normal:
4 ~ 6 VDC vent limiter OFF
Faulty:
Replace the water flow servo and sensor.
(Service Procedure IGE-2, page 47)
d.
With connector B2 , connected (do not turn
water ON… wait for the water flow servo to
return to fully open), measure the voltage at the
yellow ~ grey wires.
Normal:
Less than 0.5 VDC when unit is set at
120 °F and there is no water flowing through the unit.
Faulty:
Replace water flow servo and sensor.
(Service Procedure IGE-2, page 47)
3) Is the modulating valve operating normally? Error code 52
4) Is the water flow servo normal?
BEFORE CARRYING OUT CHECKS MARKED WITH A # SIGN, DISCONNECT THE POWER SUPPLY.
Summary of Contents for IGE-199C-5N
Page 7: ...I GENERAL INFORMATION cont CUT AWAY ILLUSTRATION 7...
Page 8: ...I GENERAL INFORMATION cont SCHEMATIC ILLUSTRATION 8...
Page 19: ...V SEQUENCE OF OPERATION cont OPERATION SEQUENCE FLOW CHART 19...
Page 20: ...20 V SEQUENCE OF OPERATION cont OPERATION SEQUENCE FLOW CHART...
Page 21: ...V SEQUENCE OF OPERATION cont SEQUENCE TIMING CHART 21...
Page 22: ...22 V SEQUENCE OF OPERATION cont SEQUENCE TIMING CHART...
Page 28: ...VI TROUBLE SHOOTING cont WIRING SCHEMATIC 28...
Page 53: ...X PARTS BREAKDOWN DISASSEMBLED VIEW CABINET 53...
Page 54: ...X PARTS BREAKDOWN DISASSEMBLED VIEW INTERNALS 54...
Page 55: ...X PARTS BREAKDOWN DISASSEMBLED VIEW INTERNALS 55...
Page 56: ...X PARTS BREAKDOWN DISASSEMBLED VIEW ELECTRICAL 56...
Page 59: ...59 Notes...
