DriSteem VAPOR-LOGIC Version 6 - Page 87

83
VAPOR-LOGIC
®
VERSION 6 INSTALLATION AND OPERATION MANUAL
Troubleshooting guide
Table 83-1:
Troubleshooting guide (continued)
Filling issues
Issue Possible causes Actions
Alert:
Excessive fill time
Alert:
Excessive refill time
Tank is not full.
• Fill and drain valve wiring reversed • Correct wiring.
• Low water supply pressure • Verify water pressure is 25 psi (552 kPa) minimum.
• In-line strainer plugged • Clean as needed.
• Humidifier cover interlock switch improperly
wired
• Correct wiring.
• Fill valve not open • If 24 VAC is present across fill valve coil, replace valve.
• Fill valve not wired properly to control board • Verify proper fill valve wiring at terminal P17 (fill, drain) and
P18 (secondary heat exchanger fill valve(s)).
• Test operation by going to the Test section under the Diagnostics
menu.
• Inlet water needle valve closed or plugged • Check if needle valve is open and free of sediment.
• Fill valve with incorrect operating voltage • Verify valve coil is 24 VAC.
• Plugged fill valve • Remove fill valve and check for foreign material plugging the valve.
• Fill valve installed backward • Check arrow direction on valve; or ”In” should be visible on fill
valve body.
• Excessive water hammer can bend a needle
valve and make it difficult to open
• Replace valve, if needed.
• Install a water supply line shock arrester.
• Orifice after fill valve may be plugged • Service valve strainer and orifice assembly.
• Drain valve leaking water • Verify drain is in the Auto position and is closed.
• Missing probe rod • Replace missing probe rod if possible; otherwise, replace probe
rod assembly.
Tank is full.
• Probe malfunctioning • Clean or replace probe.
• Verify probe wiring is correct.
• No tank ground • Install tank ground.
• Fill valve stuck open • Check valve for foreign matter.
• Fill valve installed backward • Check arrow direction on valve; or ”In” should be visible on fill
valve body.
• Excessive condensate is draining into the tank • Consult DriSteem to increase the amount of water that can be
converted to steam before receiving a fault.
• Drain valve not fully closed • If an obstruction does not allow drain valve to fully close, clean
valve.
• If there is a broken or weak return spring on drain valve, replace
the valve.
• Check if 24 VAC is present at valve. If so, check wiring of
Vapor-logic
control board terminal P17 (drain).
• Poor tank ground • Verify good machine ground.
Continued
TROUBLESHOOTING