Pitco HEAT FAiL

What does Pitco HEAT FAiL mean?

HEAT / FAiL on a Pitco Solstice controller means the heating system failed to respond to a demand for heat. The controller called for heat but did not see the oil temperature rise as expected, so it flags heat failure. The cause is usually upstream in the ignition, safety, or gas chain rather than the controller itself, and the manual gives an ordered checklist to work through.

Symptoms

• Display alternates HEAT and FAiL while the fryer fails to warm.
• Oil temperature stays flat despite an active heat demand.
• Burner does not light or ignition module shows its own fault codes.
• On ROV models the heartbeat LED may indicate a 24V DC supply problem.

Common causes

• High-limit thermostat has tripped and needs its red reset button pressed.
• Pilot flame failed to light — check the ignition module fault codes.
• Ignition module detected a marginal flame — flame sensor dirty or pilot misadjusted.
• Gas supply issue — gas off or incorrect supply pressure.
• Rollout switch has tripped and needs reset.
• 24V DC power supply failure on ROV models — check the heartbeat LED.

Diagnostic steps

1. 01

   Reset the high-limit thermostat

   Press the red high-limit reset button (downward on ROV models). A tripped high-limit is the first item on the manual's ordered checklist for heat failure.

2. 02

   Check the ignition module fault codes

   If the pilot did not light, read the ignition module LED flash codes to pinpoint whether it is a lockout, flame-sense, pilot-valve, or main-valve fault.

3. 03

   Clean the flame sensor and check the pilot

   If the module reports a marginal flame, clean the flame sensor rod and adjust the pilot so the module can confirm a stable flame.

4. 04

   Verify gas supply

   Confirm the gas is on and at the correct supply pressure. Low or absent gas pressure will stall ignition and produce heat failure.

5. 05

   Check the rollout switch and DC supply

   Inspect and reset the rollout switch if tripped. On ROV models, verify the 24V DC supply via the heartbeat LED, since a supply fault also blocks heating.

When to call a professional

Call a Pitco-authorized technician if HEAT FAiL persists after resetting the high-limit and rollout switches and confirming gas supply, especially when the ignition module reports a fault or the ROV DC supply is suspect. Gas-train, ignition module, and burner diagnosis require a technician trained on Pitco fryers to work safely on the gas and ignition systems and verify the heat chain end to end.