Delay is to prevent rapid cycling of burner. Hold 62 - Fan speed not proved Normal Operation Drive to Lightoff Hold 62 is momentarily displayed prior to burner ignition during the Drive to Lightoff.
Wiring defect Inspect blower wiring, ensure connectors at Sola controller and blower are securely attached. If problem remains, replace blower. Blown fuse Check Fuse "A", blown fuse prevents blower from operating.
If blower is on proceed to next step. Blocked venting Check for blockage of the exhaust vent. Blocked air inlet Check for blockage of the air inlet. Condensation or other foreign matter may be obstructing the tubing, preventing the switch from sensing differential pressure caused by air flow through the metering elbow.
Incorrect air switch setting Contact NTI technical support. Faulty air proving switch If venting and air inlet are clear, temporarily jumper the air switch. If the unit lights and operates smoothly - replace air switch.
If the unit fails to light or lights but runs rough or abruptly shuts down - check boiler internals for blockage. Only jumper the air switch for diagnosing purposes. Tripped High Vent Pressure Switch Lx only The high vent pressure switch will trip when the combustion chambcr is blocked. Clean combustion chambcr and reset switch.
Tripped Thermal Fuse Lx only Check Thermal Fuse on the back of the heat exchanger accessed from the rear of the cabinet.
If tripped contact NTI. Clean the combustion chamber, inspect the door insulation and reset the switch. Incorrect air switch wiring Check that the red and orange wires are connected to quick connect tabs 3 and 1 respectively. If continuity detected, replace air switch.
Hold 66 - Interrupted air switch ON and blower is on - Blower problem - Faulty controller Check low voltage wiring from blower to controller. If signal is correct - replace blower. Not a problem with boiler, check external limit. Insufficient flow for Flow Switch Lx only Check plumbing, ensure circulator is operating. Tripped High Vent Pressure Switch Lx only The high vent pressure switch will trip when the combustion chamber is blocked or venting is too restrictive.
Check venting and clean combustion chamber. Check that water pressure is at least 15PSI. Faulty sensor Check resistance of sensor and compare to thermistor resistance chart Lockout - Ignition failure occurred Lx only Spark cable disconnected Ensure that the high voltage spark cable is securely connected to the spark generator and the igniter electrode.
Check that the green ground wire is securely attached to the xAyy quick connect tab on the igniter electrode. Hold - Ignition failure occurred, failure to prove flame after 3 ignition attempts Lx only Insufficient gas line pressure Ensure the manual gas shutoff valve is open. Flame rod disconnected Verify that the flame rod signal wire is securely attached to the flame rod, which is located bottom center of the burner door.
With an AC voltmeter measure voltage across J5- 6 and ground the controller chassis is connected to the VAC supply ground during trial for ignition. Faulty Spark Generator During trial for ignition check for arc on spark electrode via the observation port located next to the spark electrode in the burner door. If the spark generator is receiving VAC and no spark is observed, replace the spark generator.
With an AC voltmeter, measure the voltage from controller terminals J to J There should be 24VAC present during trial for ignition. Faulty Gas Valve The gas valve emits an audible click when it switches on or off.
If the controller is providing 24VAC to the gas valve, and the wiring is intact, it should be possible to detect if the valve is responding. Lockout - Flame circuit timeout A flame circuit shorted to ground may show up as a flame circuit timeout. High resistance shorts can display as Lockout Lockout - Lightoff rate proving failed Blower is not turning on Missing or incorrect blower feedback signal Blower is always on Alert - Modulation rate was limited due to IAS was open Air switch open while burner firing Blockcd venting Cheek for blockage of the exhaust vent.
Lockout - Pilot relay feedback incorrect External Electrical Noise Look for sources of electrical noise, i. Connect outdoor sensor or disable Outdoor Reset. Outdoor sensor wiring Check wiring of outdoor sensor. Faulty sensor Check sensor.
Should be free of ice and snow. Check resistance of sensor and compare to thermistor resistance chart Alert - Run was terminated due to interrupted air flow switch was off Blocked venting Check for blockage of the exhaust vent.
Blown fuse Check Fuse "A". Manually switch pump on, check for VAC at pump connection terminal on line voltage barrier strip. If VAC not detected, replace controller. Faulty pump If VAC supplied to pump, and pump does not operate, replacc pump. Blower not operating Blower power disconnected Verify that the 3-position Molex connector on the wiring harness is securely connected to its mating connector on the blower. Blown fuse Check Fuse "A" using the procedure described above. Fuse "A" protects the blower as well as the ignition spark generator and boiler pump.
If VAC detected, replace power connector and remove 5-position signal connector. Blower should rotate at high speed. If blower does not rotate, replace blower. Code Description Loc Gas Valve Circuit Fault Safety - control has sensed a fault in the gas valve electrical circuit, check for a loose connection in the gas valve wiring harness. Loc 5 Limit Circuit Open Safety - control has sensed a fault in the safety limit circuit; check the following: 1.
External Limit Purple wire - if an external limit device i. LWCO is connected to the purple wire at the field wiring terminal, check to ensure it has not tripped, and that it is wired correctly. Internal Limit Heat Exchanger Thermal Fuse - the heat exchanger is equipped with a normally closed thermal fuse; the fuse opens when the heat exchanger gets too hot. If the fuse is open, contact NTI. Check the internal ground connections within the boiler.
Eliminate sources of electrical noise, i. Loc 12 Incorrect Fan Speed - measured fan speed is not reaching target fan speed within 60 seconds.
Check wiring to fan, replace fan. Loc 26 Flue Sensor Fault - controller has sensed an invalid reading at the Flue sensor; check cable, then replace sensor Loc 27 Flame present 10 seconds after closing gas valve - verify flame is going out immediately following the end of a burner demand; check flame sensor replace ; check condensate drain for blockages; increase post purge setting.
Loc 28 Flame present before ignition - check flame sensor replace ; check condensate drain for blockages; increase post purge setting. Loc 31 Flame lost three times during one demand - see Loc 1. Page 27 Determining Reset Temperature HI Calc Once the control identifies the presence of a good outside sensor, the control will automatically reduce the HI setting, based upon the outdoor temperature.
Page Lighting Boiler 9. Page Trouble Shooting The Sentry is equipped with an internal diagnostic system that verifies control operation. The following series of error codes has been developed to aid in diagnosing control problems: Problem Detected Problem Solution Page 31 Momentarily remove the intake vent from the boiler during ignition, if unit lights smoothly with intake vent disconnected reconnect and check for proper combustion if unit maintains smooth operation after ignition.
See Section 5. If problem persists contact NY Thermal. Slight vibration can Use flexible gas line to insolate the vibration noises between the gas valve and the cause noise in the Page Sequence Of Operation Page Annual Maintenance And Inspection 4. Set Sentry Controller to desired settings. Turn thermostat up, Ignition will occur. Using an appropriate Oxygen or Carbon Dioxide analyzer, take a sample of the flue gas. Page Parts List Homeowners must contact their local Installer or Wholesaler.
Description Premix burner, Page Warranty 3. If you cannot contact your contractor or service rep. NTI cannot provide technical assistance, unless you are a trained heating technician.
This manual is also suitable for: Trinity ti Print page 1 Print document 36 pages. Rename the bookmark. Delete bookmark? Cancel Delete. Your boiler may have been failing multiple times when the drain line backed up but you didn't notice since the Sentry has an outo restart feature that tries to fire up every few minutes I've installed quite a few of the NTI boilers. You need to get the installer back and have them do things right. Look at pages 13 - This information should educate you so that you can point out what you feel is wrong.
These boilers need to be setup with a combustion analyser. This is not an optional thing it's a "must". This process would result in a hole drilled in the outlet PVC pipe and covered with silicone or some form of plug after being done.
Didn't see a hole in any of the pictures, cut maybe it was just hidden. I mention this because it looks like the plastic drain tubing coming out of the boiler is turning dark which could be an indicator of the unit not burning right. Use the biggest hammer you like, pounding a square peg into a round hole does not equal a proper fit. Hydronics set up Pfunk above is exactly right. The unit is intended to work with a primary loop and secondary loop with seperate pumps to cycle through the boiler and through the system feed.
It's complicated plumbing and wiring but not impossible to correct. You don't have an expansion tank. The igniter may be getting fried from excess heat inside the boiler from the lack of 2 loop instalation.
If it's making a sizzling sound like a frying pain with grease while running then it's running too hot. The drain loop at the bottom is the wronng set-up. It should be stright down with a line-trap device on it. The draining is a passive process and backs up easily.
When mine crimped there was a gallon of water backed up. The create a LOT of water during condensing. You don't have a leak from the boiler - it's all stainless steel inside and sealed.
Good luck with it. Mine works fine at a 20 below Canadian winter - with the few adjustments noted. Piping an indirect water heater per NTI instructions doesn't use primary secondary. The older models used a loop for the condensate drain. And yes, it is possible for the hx to leak. Been there done that. Like I said, if this worked good until december then I doubt flow is an issue.
Note that pfunk admits that he is not an expert.
0コメント